[ska]

    When you become a tenured professor, the amount of work you do is far less than the vast majority of other jobs with a similar salary.

This is just laughably untrue. Sure, we may be able to dig out examples of tenured professors doing the minimum they can get by with. But you can find rare examples in pretty much any profession - the point is that they are rare.

Pretty much all the tenured professors I know well work their asses off - and due to area of expertise, many of them could make 2x - 5x salary in industry but aren't interested.