DEI has at least some roots in holding a positive connotation, a lot of companies that value an image/brand of diversity will have a DEI department/team. It's not just an acronym they made up, though it's definitely been co-opted by reactionaries as a way to describe someone they feel only got the job/promotion/attention because of a compulsion to raise up minority voices (a "DEI" hire is their way of saying the person wasn't qualified for the job, but got it because they were black/a woman".

My initial take on the rant was to simply ignore it, but now I'm wondering if there's maybe something to the idea that specifically in the shooter genre, the market is different enough that I don't really know the space. Like BG3 was about as DEI a game as you could get, and no one's arguing that game's success. But I do know a couple conservatives that were specifically kind of turned off by games like cyberpunk and BG3. Apparently they couldn't handle tasteful sidedick. Maybe for a shooter to be successful it's got to coddle what the gun enthusiast crowd is demanding? I don't know. Despite their popularity, I just don't play that many shooters.