Notes:

Alberto Fernández ends up realizing that it is real, otherwise, the Twitter profile would have another name.
The joke with Información Real De Fútbol (Real Soccer Information) is that they are a Twitter profile that posts blatantly false information about the Argentine football scene. They got fact-checked once.
This prompts people to ask if X tweet is real, which in turns makes people say that yes, they're real, if they were not real, the profile would be called Fake Soccer Information instead.
This became a meme, inspiring a lot of copycats about a wide variety of topics.
Here are some low-quality memes that I will not post, but they're often used to reply to the Twitter account:

• Yes, my friend. Otherwise, it wouldn't be called Real Soccer Information.
• Pretty much the same as above, but with a frog, instead of Dragon Ball characters.
• Is it real? (in an extremely broken English that imitates Argentine lingo)
• Of course, dude. Don't you see that it says Real Soccer Information?
  A Simpsons meme referencing this moment.