Oh, and by the way, not sure how people miss these:

> Warning: AUR packages are user-produced content. These PKGBUILDs are completely unofficial and have not been thoroughly vetted. Any use of the provided files is at your own risk.

This is from https://wiki.archlinux.org/title/Arch_User_Repository.

> Warning: AUR helpers are not supported by Arch Linux. You should become familiar with the manual build process in order to be prepared to troubleshoot problems.

This is from https://wiki.archlinux.org/title/AUR_helpers.

"yay" is one of the most common AUR helpers, it requires two confirmations from what I counted. One of them is to inspect the PKGBUILD file, the other one is just to proceed.