Its like renting a server at Hetzner and their wiki on how to install some program has an error. It’s not ideal but the main point of the service isn’t impacted.
DNS level blocking efficiently blocks content for 99% of the users, and that last 1% (or even less), can't be blocked at all (tor, vpns, etc.), so they don't matter.
To be fair if you're a grandma in Germany you likely visit your favorite weather site and yahoo or whatever, as you can see from the leaked list of blocked ips it's basically illegal gambling and streaming sites.
I get the theoretical argument but in practice pretty much anyone who is likely to run into dns blocked sites is also the kind of person who knows how to at least Google how to get past them