Sounds like a lot more transmission problems than in Europe?
They’re not used to stickshift?
That was my first thought too, and given that the vast majority of cars are auto's in the US it's probably likely. However, I've driven manuals since I got my license 2007, and I've never had a problem (never had to change a clutch, and my first car lasted to 220kkm from 140kkm without showing any signs of needing a new clutch) and I do no like the G's clutch. I drove the MiTo a couple of weeks ago and the clutch was a dream. I think the G and Dart suffer from a bad Clutch Delay Vale implementation. My dad has a 2014 Volvo V70, which I can't imagine doesn't have CDV, that has a very good clutch "feel". Obviously it's helped by the diesel torque.
Anyway, I'm very curious ($130 curious!) about the CDV delete. The consensus is that if you didn't learn to drive manual with a CDV, it's a nightmare. If I can get the "old school" clutch feel I'll be a happy camper.