I'm guessing the reason the repository is so popular is that people are worried about what Microsoft might do after acquiring GitHub. Things like... censoring content they disapprove of, for example.
This is just childish show of immature people.
Commercial business did commercial M&A with another business.
Those people are trying to do outcry for something they never owned.
But because there is worried people have to make sure enough leave the platform to destroy that network effect.