Have they outdone Oracle? Impressive! :)
On a serious note, is your comment based on historical or recent events?
For recent events, you could look at stuff how VSCode is supposedly Open Source and yet fully ridded with spyware and also propietary plugins...
On github, having MS at the realm has certainly affected too how DMCA's and such are deal with vs the old Github.
As for DMCA, I think you have to talk to the government officials about how badly it works.
Are there any other recent events that I'm forgetting that make MSFT the biggest enemy of FOSS?
That's a great example, actually, because they'd like you to think that VSCode is open source... but then if you actually use that you can't access a rather lot of the most useful extensions, which is a completely artificial limitation that appears to be there only to prevent people from actually using any fork.