It can be a potential issue. In the world of residential and commercial roofing where they use EPDM style roofing (which RV roofing is as well), the roofing must be applied flat and should not "tent, wrinkle, or bubble". If it has any of these deficiencies it will become an area of concern over the years as these areas break down at a faster rate then the rest of the roofing. Also roofs are typically walked on for inspection, snow removal, etc., if these areas are walked upon (especially when hidden snow, debris, etc.) the potential for punctures, rips, etc. is increased. Some pictures would definitely help to determine the severity of the deficiencies.
2008 F450 & 2012 Arctic Fox 29-5K Silver Fox Edition 5th wheel
Paul & Sheryl