I see this line of thought pretty frequently. I don't really understand why we collectively believe that GPG is so tough. I started using it as a teen, barely e

I see this line of thought pretty frequently. I don't really understand why we collectively believe that GPG is so tough. I started using it as a teen, barely even understanding the software, let alone how the actual encryption worked. I've come to understand it, but even when I didn't, it didn't seem difficult at all to get passable security out of it. Cyphar has the right answer for why this would be problematic, though - GPG would just prove that the initial commit was from a trusted committer. It would be trivial to use the same signature with the fake commit. That's not an unsolvable problem, but switching to a different hashing algorithm seems to me like the more reasonable solution.