GitHub have not really got much better at adding new features either though :(
This was before Actions and a whole lot of other non-git related stuff. There was years (maybe even a decade?) where GitHub essentially was unchanged besides fixes and small incremental improvements, long time ago :)
They definitely have. Github evolved a lot faster after the microsoft acquisition, I remember being mildly impressed after it was stagnant for years (this is not an opinion on whether it was evolving in the right direction or if it was a good trade-off)
They added the service unavailable feature.
I don't know, it's nice that they finally broke native browser in-page search. That's a great feature for people who hate finding things.