As a side note I just got GPT to write me some Go code and it came up with this:

    templates, err := embedFS.Sub("templates")

interestingly, this is not valid Go code (Sub is a function in the "fs" package, not a method) - but it would be quite typical in say Java.

So this mistake makes me think that GPT certainly does have a "mental model" for Go. And it's made the same kind of logical mistake I made when I first learned Go.