Why I shouldn't use Discover on CachyOS (Plasma) ?

I installed CachyOS with Plasma DE and found it has no discover in it. When I searched on their sub lots of people say that one shouldn't use Discover with any Arch distro as it will break the system. Can anybody clarify why?

Also if I am not supposed to use Discover, can anybody suggest an actual GUI application store? Unlike Octopi (which I consider just as a TUI with check boxes and columns)

Edit: I only use Discover for find and install new apps.

For updating, I just use paru.