Me!!
I stopped using it a while ago, and I get all my non arch packaged packages from nixpkgs. Nixpkgs is bigger than the AUR and the Arch repos combined. It has pretty much all of the stuff I would have otherwise gotten from the AUR. But I find Nixos frustrating to use, so I stick to Arch.
I felt extremely vindicated in my decision to avoid the AUR when the AUR malware happened.
If a user can't log in to a DBMS, they don't have query permission.
Yes. It consumes more resources. But it's not that much more, and you can make it fit easily. Many users using docker compose unwittingly do this since docker composes often bring their own database containers. When done consciously, you make a trade off for peace of mind.
I addressed takes like these in the last part of my previous comment. The linked comment also elaborates on my opinions about manual updates, manually watching security releases, and other forms of security toil.