Wow! Did not realise people hate/distrust Microsoft so much! Balmer’s Microsoft - sure, but I thought that under the current administration, they were seen as a lot more friendly company.
https://www.howtogeek.com/269331/how-to-disable-all-of-windo...
Just to be clear, I use Windows only when I have to -- never by choice.
That said, my point is that even if Microsoft's acquisition of GitHub turns out to be a bad thing, I'd wait to see how things go before migrating en masse.