CachyOS, which is one of the fastest growing distros and gets haphazardly recommended to tons of gaming refugees, ships with paru by default. Millions of forums, search results and LLM outputs encourage those same users to install stuff from AUR.
Any arch distro that has a sizeable non technical user base should know better than to ship or encourage using AUR. Shit like this is how we kill the “Year of the Linux desktop”.