Lance and most other economy level RV manufacturers have low volume and pay high costs for materials and have a lot of labor costs for every unit they make. One cannot compare them to luxury units selling for 2-10x the price or to cars and trucks. They have to make them affordable and have a profit margin for the dealers that resell them.
I have no problems with the quality control at Lance or most of their design and engineering approaches. I have my wish list naturally of areas where I would pay extra for something different and I intensely dislike the way the industry uses caulk to temporarily weather seal EVERYTHING on the exterior. But I know that a camper made to Air Stream standards would be at least double the cost and if looking at both campers on a dealer's lot I would probably buy the Lance.