I think I might of missed something here. Was this a tear off or just a re-sheet? Either way. I fail to see why it appears that someone went out of their way to leave a gap between the ridge cap and the roof ridge.
To answer a question about what I see wrong with this. Please see my original response. I clearly state that it does not meet my standards. Some contractors aim for the minimum standards. I always aim for perfection. While perfection may be unobtainable, the pursuit of such often achieves excellence.
I would never accept this poor workmanship on my house. Therefore I would never deliver this low quality work to my customers. I want my customers to look at the work we complete and know that it was completed to the highest quality standard. Why accept subpar standards when you can set the standards?
Asking a contractor to come out and inspect his crews work is not throwing him under the bus. It's asking him to inspect his crews work to ensure that his quality standards are met. If a customer disagrees with the contractor after his inspection the next logical step is to get the manufacturer involved if possible.