This was inevitable. Microsoft probably doesn't want to support both Azure DevOps and GitHub long term. GitHub needs to gain the most important features of ADO that ADO customers care about.
ADO has felt borderline abandoned since MS bought GitHub, and honestly good riddance, it feels terrible to use.
For example having more than 1 user edit anything is almost unsupported, and pages will regularly do things such as telling you that you ought to refresh to see changes, rather than just showing you the changes.
Or on other pages, anyone elsewhere changing anything at all will just trigger your page to refresh so you lose your place. This is particularly noticable on the sprint board, where if you view "all expanded" or "all collapsed", the refresh will often also reset that and throw you to a completely different part of the board.
The code review is even worse, despite some modest attempts at improvements, because you can't stage a batch of comments. Each and every comment is hand-delivered with a notification email to the recipient, so writing out a bunch of comments feels like a disruptive activity.
