Big ones are: shadiness with funding, letting their SSL certs expire 4 times, and the fact that their idea of stable isn't additional testing, but just letting the packages sit for a week.
Well, the funding issue I find to be quite trivial and of no big concern to me, but the repo issues are indeed something that has bothered me at times, where I ended up modifying repos to get the most up to date ones.
The recommendation from the repo, EndeavourOS sounds interesting, though.
The link for the post is dead, but they've let their SSL cert expire multiple times. While it happened a few years ago, I find that a hard thing to come back from.