Sometimes people tell me I should have gone with either Linux Mint or EndeavourOS, and otherwise don’t really tell me why it’s bad, just that it’s bad. So far I only could find one thing, which is that their repo isn’t 100% rolling for stability, and sometimes it does not guarantee stability.
I used Manjaro for a while, recommended it a bunch of people because it was all so very pretty. even the grub screen looked nice. for me it did however break on three separate updates, each requiring a lot of fiddling and manual intervention, despite my system being rather vanilla at the time. the last time it broke i just installed fedora instead and never looked back. all the friends i’ve recommended it to also switched at some point, because of it either being unstable/ dying or not having the features one wants. i generally recommend against manjaro, not just because of my bad experiences, but also because better distros exist.