I don't see how any of the points in the article are relevant to the symmetric encryption method I posted. Yes, GPG can do a lot, and yes, some parts of it are

I don't see how any of the points in the article are relevant to the symmetric encryption method I posted. Yes, GPG can do a lot, and yes, some parts of it are kinda ridiculous. But symmetric pre-shared-key encryption/decryption is a solved problem, and I'd much rather trust GPG than some random's git repo.