We also had a designer on staff that was let go that would constantly complain that he had to "dumb down" his designs for our equipment. It wasn't our equipment that was the issue, it's that he was a web designer, and didn't understand that his designs weren't possible to produce. It'd be like...
My boss loves this because we bill for the fixes. Prepress hates it because it's a bunch of awful work that never goes away because our boss would rather bill than educate.
As for where these people are getting degrees; they aren't. They're self taught and laughably bad at it.
We're a mostly Canon shop so I can help with some of it.
The 8000/10000 are the same machine, just speed licenses. The newer line is the 10010 and the 9010. Again, just speed licenses for the models, but there are some upgrades to the 8000/10000 engine. Mostly in-line calibration and some...
They likely think you're trying to sell the toner. we've had issues in the past trying to get extra toner for big runs. I contacted my sales guy about it and now they let me order 28 bottles at a time :LOL:.
It's a dying industry. I wouldn't tell a young person to enter this profession. The pay generally sucks for the knowledge and work, and the places that do pay well are awful to work for with cameras on you and terrible management.
My Imagepress 6010 used to do this. The machine had an adjustment for it, and I'd bet yours does to. On my machine it was called "trail edge white patch correction".
I found this thread here with the same issue you have...
They have the larger lines like the 10010 and the 9010. Canon seems like they're pushing pretty hard into inkjet though. Our sales guy comes by fairly often with new samples from the Varioprint iX series.