I scoff at the idea that Comcast is more trustworthy than Cloudflare.

Telia in Sweden has shared data with "selected partners" in a way that led to customers being extorted because of, among other things, porn surfing history and torrent downloading.

Trusting your ISP, even in a country with data protection laws like Sweden, is naive. I'd much rather trust a company that tells me "this is the data we store. This is the data we share with APNIC and no-one else".

Are you kidding? My ISP is blocking wikipedia.org, i.imgur.com, imbd.com, torproject.org, and many other.

I live in Sweden and I would never trust any ISP. There are too many cases of data shared with "business partners" that led to things like tries to extort torrent users or porn surfers (even reputable ISPs).

This should be, if not illegal at least highly problematic in the eyes of the law. At best the ISPs got a "better behave, because next time ...".

All ISPs have data sharing with "selected partners to ensure service quality" which, at least until GDPR, meant basically that they could sell data.

Whereas cloudflare states that the 1.1.1.1 data will only ever be shared with APNIC in anonymised form (which they define). Cloudflare defines what data they share for 1.1.1.1 users, which my ISP does not. I trust cloudflare, at least right now. If they were to change their retention policies and agreement I would maybe reconsider.