In short, yes.
They were not happy with a cranky coach that had them 9-4 every year. They followed him up with a swell guy that truly burnt the program to the ground. Luckily for them, the hottest young coach on the market was from Nebraska and, even better, an alum. He seemed like the natural fit. Unfortunately for them, he's not a miracle worker and he was handed a garbage roster. He's gonna need a couple of years to build a roster capable of even competing for a division title.
In today's college football, the standard is pretty much three years...which in many cases is ridiculous. Frost probably needs 4-5 if he's capable of making them a 10-win type team. Even if he's as good a coach as people thought last year, i still think Wisconsin is their ceiling in today's CFB world. If he can get them to Bo's level of success with the occasional 11 win season mixed in, they should be thrilled. If this doesn't work out, I think they're in real danger of becoming Illinois.