I found it a bit hard to understand this discussion because I wasn't familiar with the background. If I've got this right, his project let you run Linux on a PlayStation 5 (thus also providing the ability to run modern games).

Slop kiddies using AI discovered the PS5 hypervisor exploit it relied on for installation. Initially they agreed to his request to delay reporting it to Sony until after GTA6 came out (so users could at least install and enjoy that highly anticipated game). But then they turned around and disclosed it anyway (the same or next day?).

They presumably gained a nominal bounty, but nuked the project he'd poured so much hard work into. Including support for the PS5 Pro he was preparing to release next year.

The community used to be a group of talented researchers, but he's frustrated it's diluted into participants who aren't aligned with his values and don't even understand the hacks they produce.