We are last in almost all offensive categories in the league. Do we have the dumbest, lazyest, most unprofessional, untalented, undisciplined players in the league. I don't think so. What's left, its coaching. Sometimes things are not that complicated.
People have pointed out the intellect of the players as well as some being lazy. Juice has shown an inability to run option routes, Pouncey misses line calls consistently, this is evident in the fact that in the last three years when he has been out with an injury, the line, as a whole, has looked better. JT has finally had a game where looked like he actually gave a damn and I'm not sure anyone can explain what the hell is going on with Tunsil. The consistent offsides by players on 1st down show a lack of concentration. The idea that as a whole the team is the extream you mention is obviously not the case, but we are also a 4-4 team with significant issues at key positions. The defense has faltered significantly since Thomas has been thrust into a starting position. The line has always been an issue and that blame does fall on both Gase and the front office for not addressing it in the offseason.
The fact that after running a QB out there that was retired 3 months ago, dealing with the worst travel schedule of any team in the NFL, having his entire team displaced for a week because of a Hurricane, we have no bye week and the team is still .500. The guy is doing as well of a job as can be hoped for.