@Tchefuncte Bonaparte
"So I think it’s perfectly valid to have political or social opinions based around your identity. "
I'm really not sure where this statement came from.
If you replaced "opinions" with "causes they rally with", it would make absolute sense. But as is, as far as I'm concerned, what came before it is a description of why people shouldn't base their opinions around their identity.
What has to be realized is that, in a general sense, discrimination occurs via the identification and shunning of an "out-group". Additionally, and crucially, the very concept of any out-group cannot exist in a vacuum- it, by definition, will have alongside it a corresponding "in-group". In other words, the existence of a well-defined set A implies the existence of set A' (the compliment of A), with the universe in this case being all people.
Now where does "identity politics" fit into this? First of all, here's a definition of the term that I think works well here:
"Identity politics" is any sort of "politics" which, as its primary nature,
both grows from and helps solidify at least one in-group/out-group dynamic without an element of reluctance.
I think both of those caveats (in italics) are of great importance to identify certain things that may, on the surface, may appear to be examples of identity politics, but that (at least in my mind) don't really fit. I'll give one example for each to demonstrate that.
First, let's say there was a push for committees related to issues of science in the US House of Representatives to be filled by those Representatives that have the most legitimate academic training and experience in those sciences. Is this identity politics? You could make the argument that it is implicitly implying and justifying an in-group/out-group dynamic- that being "scientists" vs. "non-scientists", or "the scientifically literate" vs. "the non-scientifically literate"- especially if those individuals that are making the push are mainly scientists themselves. However, my judgement would be no, this is not its primary nature. Instead, that would be essentially the further installment of meritocracy in the HoR when it comes to committee selection.
Secondly, let's go with one a bit more obvious- was the Civil Rights Movement of the 1950s and 60s, on a whole, identity politics? You can't get around the fact that the people in it were working with an in-group/out-group dynamic- black people vs white/non-black people- and moreover that this was inherent in the movement's primary nature. However, in the majority of cases they were only doing so because that is the dynamic that was dropped into their laps from the start, rather than because they supported it. In fact, they did the opposite of support it- they wanted to break it down. Hence "I have a dream that one day on the red hills of Georgia, the sons of former slaves and the sons of former slave owners…" yadda yadda yadda.
From all of this, here's what I conclude: While identity politics can, in a very small amount, act as a temporary "band-aid" for certain consequences of discrimination, it (or at least the thought-patterns underlying it) is intrinsically the cause of discrimination in almost all its forms. Hence why it ought to be avoided.
To crystallize this point, I'll end with an analogy:
You wake up lying on the ground in a small arena. You're dressed in some kind of armor suit, and the only thing you have in your possession is a handgun and several rounds.
Right as you're gathering your bearings, a voice appears over the surrounding speakers, which you quickly realize is that of the madman that drugged and kidnapped you. He says that he's brought you here because he wants to play a "game" with you: whoever "wins" is whoever kills the other first. And then, from the other side, you see his figure, and you hear the sickening "bam!" of a bullet being fired.
What is your goal? Is it to "win" on the terms that he set out? That might solve your problems… but it might also put your own life more at risk.
So no. Even if you have no choice but to use that gun at some point, your ultimate goal is to not play the game.