I personally use EndeavourOS, and yeah, it’s great! I would never recommend it to a beginner starting out with Linux though, since being rolling release some things do occasionally break. It’s not often, but when it does, it can be annoying for a newbie. One example I can remember is when KDE Plasma stopped working around the time it was recently updated (for context, I am using a 2-in-1 touchscreen laptop. That probably had to do with the weird bug), but after a bug fix release it now seems to work fine. I’m fine with that since I like tinkering around with computers though. EndeavourOS also doesn’t come with a graphical app store either, but that’s for the better since installing AUR apps with very low friction is a bad idea (it’s one of the criticisms of Manjaro actually). All of this is fine, as EndeavourOS never claimed to be the most beginner-friendly distro in the first place. As per its site: it’s a minimal and terminal-centric Arch-based distribution. It knows what it is and that’s what I like about it :D

• another detail, I said it doesn’t market itself as stable (which is true), not that it is inherently instable (which, as you described, is partially false). I do think that rolling release distros can be good if you know what you’re doing, but for a newcomer to Linux, it’s not my first choice. That would probably go to Mint, Fedora, or similar depending on their hardware.