AUR, snap and flatpak all work differently. AUR is free for all with no trust implied or given but packages will be removed upon user intervention. So curation

AUR, snap and flatpak all work differently. AUR is free for all with no trust implied or given but packages will be removed upon user intervention. So curation is basically done by users and other administrations but it doesn't prevent bad packages from being uploaded in the first place. Most of the AUR is building from source so you just have to read the build scripts (PKGBUILDs) of each package before installing and do what a maintainer does. It gets easier on updates since you only have to check diffs between versions. I believe you are making a wrong decision if you trust anything on the AUR implicitly.