I’m no ActivityPub expert, but what people more knowledgeable than me have pointed out is that this results in fragmenting the Fediverse, which ends up hurting it on the long run. I’d definitely not want to be on an instance that federates with Facebook, but I also wish none of the larger ones choose to do so.
Like most of people in here, I only pay for Tidal, while also having access to other platforms through friends or family.