Eeeyah, I don't see what the big deal is with that fandom list, mostly because I don't care. In a world where "Grumpy Cat" is apparently the funniest meme since sliced bread I don't pretend to understand how opinions on the internet work anymore.
Besides, "Ikea Monkey" is way funnier.
What?! Seriously?! Too Many Pinkie Pies is immune to the all seeing eye but Wonderbolt Academy gets it's nits picked into next season?! (No disrespect to episode 303 or Mr. Polsky, but it really was the weakest of the season so far. (Which isn't saying a lot, this season's been pretty spotless as far as episode quality goes.))
I can't possibly imagine where all this negativity regarding this episode is coming from… well I do imagine some people may be a bit more saddlesore then others on the current Derpy shortage. Which I urge you not to read too much into, remember these episodes where produced during the Derapocalypse 2012, Hasbro has since reconsidered her appropriateness in the series if you hadn't noticed. If we don't get any more sightings by next season we'll at least get an explanation.
Anyway, trying not to get sidetracked, character inconsistency?! Dafuq?! Who was inconsistent?
Rainbow Dash: Still cocky, but just like in Sonic Rainboom when she's put under real pressure to impress people she respects she doesn't act like her usual dickweed self. Her relationship with Lightning Dust was actually pretty complex and interesting. LD was almost a mirror image of RD but with one key difference, LD pushed herself harder to win (like Spitfire said). As a result RD felt a tad inadequate in comparison. But RD soon discovers that LD's ambition comes at a price to those around her, something RD used to do herself and still does to a degree. Seeing how she acted from a different perspective, and seeing how she could have ended up if she hadn't learned the lessons she did, RD doesn't think that's really the kind of person she wants to be after all. So she quits the camp… ehhh, kinda.
Honestly my biggest gripe with the episode is how RD actually does get readmitted. I'm sure that would have been kind of a downer of an episode if she hadn't, and it really wouldn't have worked in the long run, but for a second I thought that's where it was going and I figured it was a really mature lesson.
And one other teensy weensy question. Last I checked everyone hated when RD was portrayed as a bitch-on-a-stick, but when she shows a little maturity and compassion you cry "character inconsistency" as though the change was unwelcome. I though this show was praised by you people for having such deep developing characters, but apparently when it comes to RD her personality better not show any layers other then token 'cool' character or we'll have a serious problem.
Pinkie Pie: I grow more and more convinced with each episode that being the go-to comic relief and most popular character with the kiddies, there's an actual mandate of the number of times Pinkie must appear in certain episodes. I'll admit her scenes seemed kinda crowbarred in, but it's not like you can claim Williams completely botched her oh-so-consistant personality. Pinkie is crazy, she does weird things, that is her biggest character trait.
I would have loved it if the episode starred RD almost exclusively, but that's a more then a little difficult script to pitch to the producers.
Spitfire: As for the character herself, really? the character with about 3 lines in the entire series is breaking her incredibly rigid canonical personality? Yeh, it's the Luna thing again. And I don't remember much of her voice from her brief appearance in season 1 and her even briefer appearance in season 2, but she sounds exactly like Daring Doo and really, that's all we can ask for.
Also, I think there's a bit of a misunderstanding as to what the Wonderbolts actually do. They are not simply performance fliers, as evidenced by their appearance in Secret of my Excess they are an honest-to-glob air force regime. Of course it's not like Equestria is at war with anyone, so to keep their skills sharp and be, y'know, relevant at all to society they perform stunt shows like the Blue Angels. But their training camp functions a lot like an actual military boot camp, because guess what, Sorin' didn't earn those badges doing tricks for rich people.
Physics (who is apparently a character now): I'm not sure if you caught it, but they made a point of showing RD densifying the infamous cloud-o-inconsisntancy to the point where it became considerably smaller and darker. The thing only lasted for a split second after the mane 5 landed on it (only 4 of which would actually have fallen through) before it dispersed into nothing. Clouds in cartoons, even this one, do not act the same way as clouds in real life. There is nothing in the lore to suggest that non-winged creatures are not physically effected by them whatsoever. And if that still hurts your brain you could tell yourself RD used the cloud to create an updraft strong enough to lift the ponies back up to safety, there headcanon formed, extremely devastating canonical error rectified.
Fluttershy: We know she can fly, the writers know she can fly, it was a joke, and it was hilarious.
I honestly don't understand the backlash, it's like complaining because GLaDOS is in Pacific Rim, if you can't appreciate it for doing interesting things you're looking at it the wrong way. The average episode of Dr. Who has more problems then this (*cough*weepingangelstatueofliberty*coughcough*) this scrutiny is completely unjustified.