Paraphrasing the video:

woke tabletop inevitably becomes a purity spiral because no one can escape the fact that ever-expanding and ever-evolving standards make it literally impossible to never offend anyone

I'm sure he needs to present this as a universal because he immediately loses half the audience if he dares to speak the truth.

That truth: leftists identify spaces as good or bad and deploy their rules accordingly. You can crucify a leftist community with their own rules without breaking a sweat, but the vast majority of leftists will not engage in friendly fire. Those rules are for destroying cultural and political enemies, not allies.

This mirrors the phenomenon of the postmodernists never using their tools to deconstruct the grand narratives of intersectional feminism or communism. See, leftists created postmodernism to destroy specific targets. Any attempt to apply postmodernism universally will damage leftist ideologies. So the leftists who comprise 99% of postmodernists all conveniently skip those analyses.

Point being: we are not dealing with sincere people forwarding a cohesive and coherent ruleset that happens to have some flaws. We are dealing with people who crave power and will do anything to get it. Good arguments aren't going to defeat them.