FWIW, the original stuff lasted a long time.
Hardtops I restored in the '90s showed little to no wear on them, and I re-used most of them.
(Last several cars since have been coupes or early B wagons.)
Maybe the glues & flocking now are not as good due to regulations ?
I'd call the manufacturer; the DMT stuff I recently bought was excellent.
Also, I haven't had any flocking problems on the sweeps/weatherstrips at the belt areas, or sedan run channels.