This argument is basically “I don’t need privacy because I have nothing to hide”

I think it's more, "don't consider any part of it private." I always ask people for their email password when they say "I've got nothing to hide" I think it's rubbish.. At the same time, I treat facebook (all of it) as if it were public. If I wouldn't wear a t-shirt with my DM's on it, then I don't write them.

Not at all, I would very much like to protect personal privacy rights. I'm saying a small number of businesses have convinced the general public to invest a massive amount of time, money, and attention in virtual spaces. These organizations intrude in our lives because we use their platforms. We need to quit using their platforms.

Sorry, I was trying to characterize the sort of argument given: "Just don't use it" only works if the people you want to interact with are available some other way in a nearly equivalent fashion: if one's friend group is mostly on Facebook, you sort of have to pick between using FB and missing out on a certain set of social interactions.

Oh, then I agree, but I would suggest it's a worthwhile inconvenience. The more people quit these services, the less incentive other users will have to remain. It's surprising sometimes how even one person's decision can generate mimicry.