To be fair, a "very very senior dev" wouldn't tell me that I'm doing it wrong without telling me what I'm doing wrong.
If AI is as good as it being marketed as, you shouldn't even be able to hold it wrong!
“No true Scotsman” would require me to redefine “senior developer” to exclude people who disagree with me. I didn’t.
And “you’re holding it wrong” is a strange objection to a tool that, like Git, rewards learning how to use it. The question is whether that learning pays off.