First he doesn't say universities should prepare founders - his advice is to those universities that do want to do that.
Second, his advice is basically to skip BS business education and make students good professionals, well-rounded intellectuals, not afraid of starting a business. Anyone would benefit from such education, not only prospective founders
As a university professor, I've seen that all universities want to do everything.
By which I mean, they employ all sorts of people who are pushing a huge range of agendas. You can't meaningfully speak about "what universities want", because various factions tend to expect free rein to pursue their goals, and there is no mechanism to get everyone pushing in the same direction.
I felt my most valuable formative experience for being a startup worker was the summer I was back from college and the supermarket I worked at in high school felt they owed me a job even though they weren't really hiring.
I was assigned 50% as a bagger in the front end and 50% a pinch hitter attached to the store manager who did whatever random things we needed whether it was deep clean the floor, paint a metal strip around the building, learn to work the meat slicer to sub for somebody in the deli, sub for people in the bakery, etc.
That made me into somebody who did whatever need to be done, but people who haven't had that kind of experience get really hung up on job titles and think "I'm a data scientist, I don't need to do that."