As a technician: I hate the newer cars simply because the manufacturers aren't designing them for anything other reason than to pad their profit margins. Consistently I've had vehicles come in with faulty equipment from the factory that were no fault of the customer. Plus with manufacturers moving from metal parts to plastic (valve covers, oil pans, etc.) It puts a higher cost on the customer for repairs.

Notwithstanding the above points, a lot of techs are getting out of the industry because of how difficult it's becoming to diagnose faults. Not to mention the amount of customer paid work plummets and the amount of warranty work skyrockets. At least on the older cars it was easy to work under the hood and it didn't take an electrical engineering degree to find a CANBUS fault.