Mines isn’t doing that. I’m light. On DMF’s in general. My156 weasel did 150,000 on it’s original.
Think mine showed signs of going at 120k, IIRC but it didn't get really bad until maybe 140k miles. Depends what you do though. Mine's done a fair amount of towing and the missus isn't gentle with her. I wince whenever she changes gear. As for parking ... no wonder the friction plate was burnt. I've put a racing spec heavy duty friction plate in there now!