Indeed, after pacman and yay I'm never going back to Debian-based systems for personal use. The Arch User Repository is so much more hassle-free than trying to install stuff on Debian from 3rd-party repos.
You can audit the PKGBUILD scripts yourself. A good AUR helper, such as paru (https://github.com/morganamilo/paru), will by default automatically present the PKGBUILD for the user to evaluate before proceeding with the installation.