Yeah, you’re right, technically it’s not a “diff”, it’s the changed files.
I don’t think this technical detail has any consequences for the general mental model of Git though - as evidenced by the fact that I have been using Git for years without knowing this detail, and without any problems.
Commits don’t store diffs, so you’re wrong from the start here.
Hence why people say “git is hard”
Yeah, you’re right, technically it’s not a “diff”, it’s the changed files.
I don’t think this technical detail has any consequences for the general mental model of Git though - as evidenced by the fact that I have been using Git for years without knowing this detail, and without any problems.