There are certainly still a few edge cases where the AUR is the least shitty option, and if those apply to you then go for it, but my experience has always been that the more I use it, the worse my experience gets, and everything I need has had better options for a while now, and those edge cases where it even makes sense are rapidly dwindling. But yes, I was exaggerating how bad it is. There are still more than just a few uses for it. EndeavorOS is maybe okay if you want that without having to install Arch, but Manjaro messes with things enough that it's not as compatible with the AUR as it likes to pretend to be.

And yeah, I agree, there are lots of ways to build up your own system. You can do it with any distro if you're determined enough, and there are other decent options besides just Arch. I just find Arch to be the easiest one to do it with, and I like easy. It's maybe counter-intuitive to say, but I like Arch specifically because it makes the things I want to do easier than any other distro does.