There's been a rise in the term "regressive left" for a while. And for good reason, the left(especially progressives and the social justice clique) have been at the forefront of anti-democratic beliefs for quite a while(see the big push on free speech zones, safe spaces, no-platforming, violent protests against individuals, anti-individualist choices, etc). And unlike the right, that cast and purged their crazies out, the left is still embracing theirs and parroting their views. In many cases, I'm going to guess that it's because they're afraid of being labeled "racists/sexists/homophobes/misogynists/etc" that the regressive left has been using to attack anyone who doesn't share their insular worldview.
Anyone who's been paying attention to tech culture or gaming culture will notice it. The regressive left is against free expression, they only want their view points, their ideals, and their versions of vidya. And are willing to throw hissyfits over any of this. They have no qualms about actually harassing people, they'll run ops to do it(see con leaks), and all the rest of the nasty shit that they claim those on the right do. Which some people have figured out is pure projection on their part.