Sometimes things already don't work. For example recently, I used Firefox and couldn't create an organization. It would just hang, when I clicked the green button to create it. Not sure how they could mess that one up, but when I used Chromium, it worked. It should be as simple as sending a form, but somehow they f'ed that up.

Using ctrl+enter to open issues in a new tab... How on earth could you break this?

Maybe they have given most of the development over to AI?

The performance degradation started before the AI boom imo

They seem to have been early adopters (dogfooding).

Don't forget many of those very junior developers they've unleashed on the front end is GitHub Copilot. Vibe coding is the new GitHub mandate, because they are serious about dogfooding.