OK, I can agree they have had some good seasons sprinkled in there, but as a whole, Fleck's tenure has been the best this program has seen for quite some time.
Gutey - Bad
Wacker - terrible
Mason - average
Brewster - terrible
Kill - average
Fleck - above average
Your analysis lacks all context.
1.) Fleck walked into a situation with a new stadium, new facilities, and a supportive AD including money for his staff.
2.) The prior coach was not fired due to the performance of the team on the field - the immediate year prior, they went 9-4
3.) When Fleck took over, the Gophers had re-established a bowl tradition - 5 bowls in the prior 5 seasons
Now, compare that to Glen Mason
1.) He needed to schedule recruiting trips around tractor pulls and monster truck shows at a stadium in no way connected to the campus with horrible attendance
2.) The prior coach had just gone 4-7 and was fired for the product on the field and averaged a shade over 3 wins a year during the prior 5 seasons.
3.) The Gophers had not gone bowling the prior decade
Now, I am not saying that Mason was God's gift to coaching - BUT - PJ's results are by no means astonishing given the situation he walked into. Off the top of my head, he had the following future NFL players on the squad:
Blake Cashman
TJ
Santoso
Carter Coughlin
Kamal Martin
This is far from a bare cupboard that Mason and the other coaches walked into with way less AD support etc.
I think Gopher fans are scared to make a coaching move because of the utterly moronic move to hire Tim Brewster. This is not even hiring one of the high flying coordinators or up and coming coaches - this was a completely reach move for a guy I think no one even knew was interviewing. For PJ, he is supposed to be a great recruiter and motivator - well, I question both given the drop off in talent after MO and for the entire receiver core as well as our lack of any halftime adjustment where the team actually plays better in the 2nd half.
Now, I am not saying that we need to fire PJ - but, we need to bring some realism to what would likely come next (not a Brewster 2.0 situation) as well as judge his performance based on the situation he was handed.