Did the people downvoting this post even watch the video?
It's been a while since I watched it, but I think it'd be accurate to say the TL;DW is basically that we shouldn't care about 'left unity' if that means abandoning vulnerable people and reliquishing our deepest values. Essentially, if 'the left' doesn't deliver safety for us and the people we love, then 'the left' can suck it.
I would have thought people on an anarchism community could appreciate that, and if they don't, then they need to do some thinking, and maybe learn some history to see how anarchists have responded to demands of 'unity' and been persecuted in its name.