Supperior Nissan review: Rear ac hoses

I own a 2013 pathfinder, in 2019 had the ac hoses replace from the front to rear evaporator, just within 4 years the hoses have rotted at the right rear connection. As a tech for 47 years it seems that nissan has a problem with the aluminum lines not holding up to north american weather. I really like my pathfinder and the two dealerships I have dealt with have been great. The close to 2000.00 dollars to replace these lines (hoses) if there is an alternative replacement part that would last longer than 4 years, I am now on a fixed income and can not afford to replace these lines (hoses) every 4 years, if there is any assistance available.