So the only criticism here is that views of various people on LW forum do not conform to the mainstream social justice outrage narrative, where everything needs to be politicized and "status quo" must be fought?

That's sort of the entire point of "Politics is the Mind-Killer" statement, a point which Bond also missed - LW community wants to focus on effective ways to deal with actual problems, as opposed to doing politics. They're not criticizing "a collective black identity", speaking against them "forming a political block". They're not talking about it. It's besides the point of that article and mostly besides the point of the entire community, which tends to focus on how to make things better for everyone.

Frankly, I find it funny to see accusations of racism aimed at people who are known to seriously, and not just as a figure of speech, consider humanity as one great family who are in it together. But then again, everyone of us who is not outraged is secretly a racist and supports the enemy.

Also consider the core statement of the Mind-Killer article:

"Politics is an extension of war by other means. Arguments are soldiers. Once you know which side you're on, you must support all arguments of that side, and attack all arguments that appear to favor the enemy side; otherwise it's like stabbing your soldiers in the back—providing aid and comfort to the enemy. People who would be level-headed about evenhandedly weighing all sides of an issue in their professional life as scientists, can suddenly turn into slogan-chanting zombies when there's a Blue or Green position on an issue."

It's perfectly OK to avoid that kind of political discussions. I'd say it's weird to actually partake in them.