Consider: what is more 'free'?
A) Here is some code, do whatever with it?
or
B) Here is some code, you can only use it in certain circumstances?
FSF is dead because it's not practical, and the ideologues behind it naively malign 'capitalism' as something terrible for the world.
OSS makers are free to publish as they chose. Apple and MS don't force or cajole anyone to use MIT. If you use copyleft, your software will not likely get used very much and that's that.
'Big companies leverage over small developers!'
True, maybe they should get together and license their software to Large Corporations?
Finally, the conversation started with a giant Photo of Stallman and that hints at the ideological demagoguery right from the start no matter how much they try to play it down, it'd have been better to not opened the discussion with that at all.
In the end, it will not matter, very few will use copyleft because it's just not practical and that's that.