Their DoH going down for hours multiple times is what forced me back to cloudflare, i don't trust cloudflare more but at least it works consistently.

Additionally the default of blocking 'malware' doesn't jive with uncensored internet - that should be an opt in and not a default on their flagship address if they want to be taken seriously as unfiltered provider.

If the encrypted endpoint can go down for extended periods and they curate list of 'malware' they are not something that should be considered a gateway to uncensored and open internet.

I frequently get mini failures with quad9 and my DNS client is too dumb to retry with another server (or quad9 returns a valid but bogus response that prevents my client from hoping to the next server) so I had to ditch quad9.

Quad9 also has worse latency but I could live with it, I just can't live with web pages failing to load several times per day(especially hacker News that has their DNS TTL set to 1 second)

It doesn't happen with my ISP's servers nor with CloudFlare or google or even good ol' L3.