I'd guess that's pretty field dependent. What you're saying matches my experience with biology profs - technically once they get tenure they could chill out, bu

I'd guess that's pretty field dependent. What you're saying matches my experience with biology profs - technically once they get tenure they could chill out, but then they wouldn't have any funding for research anymore, so they wouldn't be able to do much of anything in their field. In CS I saw more of a mix though. It's feasible to fund a small research group without busting your ass, and it also seemed to me that putting time into coursework, writing books, etc. was culturally a more acceptable use of time in that department than it was in biology. I knew a few CS PIs that actually purposely scaled back their research once they got tenure because they were more excited about teaching and some of the educational initiatives the school was working on. That's not the norm of course, but I literally can't imagine that ever happening in a bio department lol.