If someone sneaks in spyware or malware inside the makepkg, that isn’t arch’s fault, that’s the maintainers fault of the makepkg.

I don't think that anyone argued otherwise.

I even said it in the very reply you are replying:

The AUR is managed and operated by the Archlinux team. As the packages are community-driven content, they cannot guarantee and give support, because it is not their package.