The missing context is that he was quote-tweeting a thread by Sandy Petersen titled "How Quake ruined id software":
https://x.com/SandyofCthulhu/status/2069592209645785294
How Quake ruined id Software.
There has been a lot of praise of Quake of late, with its 30th anniversary, and it's deserved. Quake is an amazing feat of art, programming, and design. I worked on it, and everything came together almost perfectly from all of us. We ended up with a free-wheeling, frenetic action game with enough of a visible world to grip the imagination.
... [thread continues] ...