You need to think about how many campers are sold per year and then think about how many complaints you see here. The majority of the people who complain are furious about something and come here to voice their complaints and most of the people who are happy are out camping and having a great time and you never hear from them.
On my current rig (Jayco 28BHS)I have had to use my warranty for two things a slide adjustment and a nut that loosened up on my black tank. To be quite honest I don't think any of those things are all that major for it being 1.5 years old and my dealer took perfect care of me with no questions asked. Either of those things above could have been from the repeated abuse of me dragging it state to state and bouncing down the road so I'm not upset at all since it 1.5 years old and both of these just had to be dealt with this year. When I picked it up from the dealer new there wasn't a thing wrong with it.
On my previous rig (Jayco 19BH) I never had to take my camper back for a single thing in the 3 years I owned it.
2004.5 Dodge Ram 2500 Cummins
Hypertech Tuner Running Stage 2
2013 Jayco 28BHS