Isn't the name on the relevant "git blame" (or equivalent) line irrelevant unless the team signs commits with GPG (or equivalent)? It's trivial to forge the author.
git blame was figurative, I don't even know if they use git, I basically meant the person who is responsible for injecting that line (if they ever find out). And as you said, yes, the first thing someone would do who would insert that is of course put someone else's name there.