Protesting on a social network is like protesting inside a shopping mall

In the latest episode of "Le meilleur des mondes" on web3, sociologist and cyberfeminist Spideralex offered a comparison I found genuinely thought-provoking, between protesting on a (private, centralised) social network and protesting inside a shopping mall.
Here's her point, slightly reworded:
It's possible, of course, you can make a struggle visible, but you're not in control of the space you're in. You're not at home, you're on someone else's turf. They tolerate you, you don't know how they'll react, when and how security will step in, when you'll have to leave, what happens with the cameras watching the protesters.
— Spideralex, sociologist, PhD in social economics and co-founder of the cyberfeminist collective Donestech