sorry to be so direct, but if anyone is parroting anything, it's you with the "they would never do that thing they always do, i'm super reasonable" position. EEE is literally covered in the first leaked Halloween document as a strategy to displace open standards.
https://en.m.wikipedia.org/wiki/Halloween_documents#Documents_I_and_II
this is a strategy microsoft has consistently used for years and continues to use to this day. hell, they are embracing and extending javascript right now with typescript.
how many years of lost productivity and set backs in open web standards because of their internet explorer nonsense and you're saying it wasn't a successful execution of this strategy? i think they won and set back the open web by years.
one point about the mit license is that it's not copyleft because mit license does not protect derivative works. that is why they fought so hard against gpl licensed works and even forbade the gpl3 license on codeplex. mit license is no threat because it can be incorporated into closed source products.
with github, i don't think they are going to pull a musk or a spez, they are going to wield their influence carefully to frame the conversation and tools around open software to work in their favor as they have always tried to do. i do agree that they seem less outwardly aggressive than back in the day, though.
as far as facebook in the fediverse, they will have the ability to inflict significant, if not fatal, damage, just like ms did to open web with ie and just like google did with xmpp with gchat. that's something worth discussing.