Am I Getting Ready to Buy A Lemon?

I went and read through the other thread referenced here and it raised some doubts to be about the author of that thread. He states for over 4 years he could not use the motorhome except to drive it back and forth to the dealer. Yet none of the problems that he lists would have prevented him from using the coach. You can still use your coach without the leveling system and that was the most serious problem he listed. Everything else sounded like cosmetic issues. Why buy a RV and make those kind of payment and then just let it sit and not use it over cosmetic issues? Leaves a doubt in my mind.