Agree it is been said before. The college game is much more demanding timewise. Between recruiting, being responsible for 100 college kids, and now with portal and NiL you need to re recruit your entire roster each year it is very demanding.
In the pros, you deal with prima donnas, but you have a draft where much of the work is done by others, the players union and your lawyers handle behavior issues. All you need to do is win. More pressure to win but not by a whole lot.
Unless you love working with young men and developing them, and or love recruiting the college game is much more demanding for a time standpoint.