Not sure if joking, but I agree, in a general sense. For skills above a certain level/specialization, I don't like the idea of a "full time, career teacher". In order to really ground the lessons/advice they're giving, they need to be a practicioner[1] too -- otherwise, your questions will get answered with "... that's what the book says" or some rationalization of some idiosyncratic ritual they favor. That doesn't impart a real understanding.

For a HS counselor, that would mean they also work as a career counselor outside to tell people whether or what jobs to change to, or to stay at their current one.

I wouldn't apply that to core education, as there are no e.g. professional adders, but you get the the picture.

I could go on, but that's a topic for another day, I guess.

[1] a retired or former practicioner would suffice here too