It's typical of dev burnout, though. Communication starts becoming more impulsive and less constructive, especially in the face of conflicts of opinions.
I've seen it play a few times already. A toxic community will take a dev who's already struggling, troll them, screenshot their problematic responses, and use that in a campaign across relevant places such as github, reddit, lemmy... Maybe add a little light harassment on the side, as a treat. It's a fun activity ! The dev spirals, posts increasingly unhinged responses and often quits as a result.
The fact that the thread is titled "is lutris slop now" is a clear indication that the intention of the poster wasn't to contribute anything constructive but to attack the dev and put them on their back foot.