Lots of '70s all wood constructed RV trailers/truck campers/class C/etc out here with no issues.
IMO its a non issues as each has its advantages and dis advantages.
A leak in any trailer regardless of wood or aluminum framing can cause issues of some kind.
"good judgment comes from experience, and a lot of that comes from bad judgment" ............ Will Rogers
'03 2500 QC Dodge/Cummins HO 3.73 6 speed manual Jacobs Westach
'97 Park Avanue 28' 5er 11200 two slides