I totally agree. When you go into that much trouble of creating an alternative (safer) EU DNS, try at least to make it user memorable by using easy IPs. I don5 understand why other HN users have downvoted your comment.
Would be cool, but it's very very hard to get such a memorable IP. And it costs a lot of money. Those who own such IPs wont give them away so easily. So unless you get a donation of such an IP address (actually more a block of IPs, like Quad9 who got 9.9.9.0/24 from IBM, see e.g. https://www.reddit.com/r/privacytoolsIO/comments/llqd7h/quad...), or have a lot of money... you'll probably be out of luck.
Because I set DNS approximately once per LAN that I build, when I configure its DHCP. The pretty IPs are cool, but this isn’t something I type more than once per year or so.