They call them "executive assistants" these days but since I'm an old-timer, I can still call them secretaries. Just like I still call "flight attendants" stewardesses.
That is true... the point is how to get paid more than the current minimum wage, not necessarily the maximum theoretically possible.
A good secretary is worth every penny of that $70K. She is the memory and conscience of the office.
Secretaries usually used to be men. Having them be women was actually a women’s liberation move. But our modern women’s libbers are not appreciative of this.
And a lowly “minimum wage” gofer could migrate up to being a secretary.