I guess this makes sense Github announced they are gonna bring stacked PRs this year so I think that kinda makes Graphite obsolute.
Given the VP of GitHub recently posted a screenshot of their new stacked diff concept on X, I'd be amazed if Graphite folks (whos product is adding this function) didn't get wind of it and look for a quick sell.
So, we'll see what it ends up like, but they have apparently already executed.