Tbh I don’t see it as a huge problem as long as a. The data is anonymous, and b. they aren’t trying to sell the data.

I mean if you choose to use someone’s service, you’d want it to get better. And one of the reasons they get better is by collecting feedback of what’s working, what isn’t.

It’s very hard to nail down a good ux without feedback.

Point B requires trust, which users shouldn't give to developers who collect as much analytics as possible. If you can't trust a company to respect a reasonable expectation of privacy then why would you expect them to not profit off of it? It's just all very quiet and down in the Ts & Cs, but that doesn't mean it isn't the logical conclusion if given exposure.