Objectively we can not say "this is the beginning of the end of GitHub". Many people use GitHub daily still. But I think this right now is kind of a period of where GitHub is sliding into a bigger crisis. I am noticing this, among other things (including reddit and Hackernews in the last ~4 weeks becoming more and more critical of Microslop, 'xcuse me, Microsoft, which controls GitHub of course) when I look at the recent blog entries made by GitHub staff - the three latest being:

27th April 2026: Starting June 1, your Copilot usage will consume GitHub AI Credits.

28th April 2026: An update on GitHub availability

28th April 2026:Securing the git push pipeline bla bla bla critical remote code vulnerability bla bla bla

In particular the GitHub availability is interesting. When I read it, it almost sounded like a plea to "believe in us still, guys!!!". If you then read what the ghostty author wrote, something between the blog post from GitHub, and the outside world, no longer matches. GitHub is like on the titanic, they see the iceberg part above water and say "nothing to see here, this ship is invincible" (aka AI is invincible). Meanwhile everyone else already jumps off the ship ...