The plastic isn't the guilty.
The kind of plastic plus stupid RPM and dumb engineering is!
Mueller machines are 100% made of plastic, they NEVER rust and after many tests simulating the worst situations a machine would stand in a standard home, considering the worst kind of consumers, the machine didn't blow like the LGs.
After more than 15 years on the market, their all plastic spin dryer still one of the best machines here. NEVER a consumer complained it exploded. By never i mean really never, not even a single unit.
With their new front loader is the same. The machine is designed to be safe.