git cat-file commit HEAD
to see something like: tree <tree-hash>
parent <parent-hash>
author <author-name> <author-email> <timestamp>
committer <committer-name> <committer-email> <timestamp>
gpgsig -----BEGIN PGP SIGNATURE-----
<ascii-armored RFC9580 signature>
-----END PGP SIGNATURE-----
<commit message>
You can view an example of the structure of this ascii-armored signature here <https://cirw.in/gpg-decoder/#-----BEGIN%20PGP%20SIGNATURE---...>.You can add a patch to git to support more signature types than just OpenPGP. You may then be able to move mountains and get GitHub/others to join in the validation. Finally, if you can find bugs/exploits in GnuPG, you should report them and you will definitely get credit and recognition for them. They are not trivial to find.
Well you are neither, all you do is throw unobjective flames around ("gnupg is trash") and post various claims about bad security without backing them up, implicitly demanding that other people do the leg work of disproving your accusations against the GNU project.
Are you working for Apple by any chance?
No, my background is in aerospace and I'm currently in grad school planning to pivot into a different field.