The older, and hopefully more rational I become, the more I agree with you. I've watched a fair amount of real NU (Northwestern University is NU, University of Nebraska is UN) football and I like it because I'm not super emotionally invested in it and can analyze it way more logically than I can Iowa football. NU's athletic department is pretty steady about supporting Fitz - sure, there are fans who get greedy, but they're just not realistic. The guy had back to back 5-7 years, but it was clear nothing was fundamentally wrong with the program and he came back in 2015 and got trucked by Michigan and Iowa, but otherwise went 10-2 in the regular season. Beat Stanford at home (same Stanford team that murdered Iowa in the game that I don't want to talk about) and Duke on the road that year, too, so it wasn't like he had a slouch schedule (won at Camp Randall and beat PSU at home).
You mention Solich - another guy worth mentioning is Pelini. Now Pelini talked bad about the fans, which is a huge no-no irregardless of where you coach, but the fans turned on him over performance. Those teams were on pretty solid footing and Pelini played a style of football that was compatible with the Big Ten. Didn't matter to the fans.
Thing is, Nebraska ain't playing in a world where they can run through a creampuff non-con schedule and then have teams like Kansas and ISU throw pillow fights at them and then let the whole season ride on one tough game against Oklahoma. Those days are long gone, but the fans don't get that. Look, our side of the Big Ten is soft, maybe one of the softest divisions in the country, but if mid October rolls around and you play Minnesota one week, then have to go Camp Randall, then draw Northwestern, then have to play one of the 4 decent-good teams from the other side, you better be one helluva good team to get out of that stretch better than 2-2. The coaching is so good, the weather is a factor, there's always some stud who comes out of nowhere, the road officiating is spotty, etc.
Their fans just don't get that. The number of things that have to go right for even a 10 win season in the Big Ten nowadays are pretty significant unless you are OSU or have some once a generation freak like Saquon Barkley. Wisconsin has figured out something that works for them, and Pelini had Nebraska on a somewhat similar path, but Frost is going a different direction which has been proven not to work so well in the Big Ten.