the distro screams of a team that has no freakin' clue how to maintain an actual distribution.
That's basically how a whole bunch of those "easy" and "gamer" distros are because people have no standards, they just want the "easy" part not the "runs well" part.
Manjaro is big and still we have no shortage of content for manjarno. In its earlier days Mint was also extremely sketchy, you couldn't even dist-upgrade it.
Those distros are for the most part just the regular base distro with a bunch of stuff bolted on that is not necessarily properly integrated. Some of them straight up copy the author's dotfiles into your home folder because their customizations depend on it and they didn't bother figuring out how to put it in /etc and /usr for a more system-wide experience. Not even using custom packages to automate it, just copied manually as postinstall scripts.
Making a proper, well integrated and reliable distro is art that few get right.
They're probably okay for most users, especially the gamer kind. But the value goes down fast especially when you're used to plain vanilla Arch.