DL was one of our strongest positions, and he also had very good DL lines at Iowa (NFL guys). And people say he can't coach. Ah, yeah that makes sense.
If that werent absurd enough, Barney Cotton may have been the most hated coach here over the last few years, and now after the bowl performance, people are signing his praises.
The only thing that's consistent here is that some posters think they have all the answers.
You are missing many points.
The lines at Iowa haven't changed much since his departure and the ones here didn't get much better when he got here despite an upgrade in talent. (Collins + Gregory > Meredith + Steinkuhler) Moreover, saying the D line was one of the strongest positions on the team says more about how bad the other position groups are (e.g., LB, OL, QB) than how good the line was.
The praise for Cotton is that, in the role as a head coach, he showed poise and kept an even keel. Again, that says more about how sh**ty Pelini was than how good Cotton is. And there is no inconsistency in saying that Cotton is a terrible position coach, but a decent CEO-type. Frankly, I'm not surprised he might make a decent HC just as Pelini, though an abomination of a head coach, might be a decent DC under a head coach that can keep him appropriately muzzled.
If Kaz was such an awesome D-line coach, he would probably already have a job, if not here than elsewhere. He doesn't, even for the high school coach that's now leading the Running Rebels of UNLV with the assistance of Cotton and Garrison. Speaks volumes.
Also, the last line in your post can just as easily be said about yourself.