I've been active as a professional since the 90s. I saw #Microsoft at the height of their predatory practices. I saw the Ballmer years.
Even so, the reactions around their acquiring #Github feel like hysteria and histrionics.
Run your projects where you will. I use Gitlab for my own things. But do it because you evaluate the trade-offs and choose, not because you get swept up in some meme.
You may find the alternatives aren't as stable, usable or available as you'd expect.