Of course they do, but I don't think any one saying Klein should go knows what progression looks like or what the expectations of the head coach is and what the HC and OC are doing to set the QB coach up for success.
I felt like Skylar hasn't improved enough in some of his weakest areas (pocket awareness/reading progressions) since he's been here. I also don't think that Howard has developed at all so far, which is disappointing given how many starts he's had. I get that Skylar has been banged up but he's also been here 6 years. Howard is still young but that's a lot of starts.
I'm not saying Klein should definitely be gone but I think if he wasn't our former QB, he'd face a lot more scrutiny.
I don't know what our passing trees and reads are so I can't comment on his progressions.
As for Howard, number of starts shouldn't be used to judge his progressions. He's only had one spring and summer in the program. This year he has only spent 2 weeks getting #1 reps in practice. He's very young in his experience in the program. That being said, I will still ask what is the expectation of his progression and how do we judge it? We know he has a pretty low floor, what's the ceiling?
I certainly don't know the route tree but my impression is that Skylar looks to one side of the field and largely stays there. If he doesn't get the ball out within the first couple of seconds, he isn't going to get it out from the pocket, even if he has time. I get Howard is young, but I would've liked to see a better TD/TO ratio this year. He seems intent to chuck a lot of balls deep whether they're open or not. Fortunately, a lot of those throws haven't been close enough to get intercepted. I get building confidence to some extent, but the way they talked about him going into the year would make you think they're awfully proud of his improvement.
Maybe Klein is doing a fine job and Messingham is largely to blame. I just think the fanbase is okay hating Messingham but I've seen a lot defending Klein blindly. My take isn't that Klein needs to be fired, but that everybody on the offensive staff should be considered.