This seems like the context: https://kotaku.com/linus-tech-tips-gamers-break-nexus-youtube-pc-gaming-1850743611

LTT is facing backlash for a couple things.

1. They’ve had a lot of recent factual errors in their videos
2. They received a prototype water block from a startup, used it incorrectly, and released a video trash talking it. Then, they sold the prototype at an auction rather than returning it despite the startup asking for it back.
3. A former employee came out recently with reports of sexual harassment and a toxic work environment during her time there