That’s discouraging. I don’t think all manufacturers are the same. I bought a new Arctic Fox 990 in 2018. I had a couple of minor issues due to failed components … the power jack control board failed during the first year and the hot water heater bypass valve failed. Truck Camper Warehouse hustled a new control board to me and the manufacturer sent me a new bypass valve. Both parts covered under warranty, otherwise no issues.
I spent a good deal of time searching the internet for customer feedback on camper brands and dealers. That is an important step in buying a new camper.