Russian sounding names, many with little GitHub activity and most are certainly not major contributors to major projects. So already pretty sus.

Then there's this: https://news.ycombinator.com/item?id=26618253

Even assuming that each and every one of those signatures has a human behind it, it smells more like a brigading attempt than it does an outpouring of genuine good will toward Stallman from members of the community in good standing.