The real problem today IMO is that Microsoft waited so long to drop the charade that they now felt like they had to rip the bandaid. From what I've heard the transition hasn't gone very smoothly at all, and they've mostly been given tight deadlines with little to no help from Microsoft counterparts.
Then Azure Dev Ops (formerly known as Visual Studio Team System) dead o n the ocean floor.
Although given how badly GitHub seems to be doing, perhaps it's better to be ignored.
There's clearly one small team that works on it. There are pros and cons to that.
It hasn't even got an obnoxious Copilot button yet for example, but on the other hand it was only relatively recently you could properly edit comments in markdown.
If the client has existing AzDo Pipelines then I'd suggest keeping them there.
When I saw his interview: https://thenewstack.io/github-ceo-on-why-well-still-need-hum... i thought "oh, there is some semblance of sanity at Microsoft".
This was after seeing those ridiculous PRs where microsoft engineers patiently deconstructed AI slop PRs they were forced to deal with on the open source repos they maintained.
When he was gone a few months later and github was folded into microsoft's org chart the writing was firmly on the wall.
Also of note is that the Microsoft org chart always showed GitHub in that structure while the org chart available to GitHub stopped at their CEO. Its not that they were finally rolled into Microsoft's org chart so much as they lifted the veil and stopped pretending.
Nonetheless it looks like he was both willing and able to push back on a good deal of the AI stupidity raining down from above and then he was removed and then, well, this...
I don't personally know him and wouldn't begin to assume on what, or how, he pushed back. Though Microsoft had AI in the GitHub org well before the leadership change - the AI leader now in charge of GitHub was previously in charge of an AI org that was moved over in the org chart to dotted line report as embedded employees, or whatever they would have been called.