yeah I'd love to see that turboed BX ACTUALLY have a 6' snowblower or my 5' rototiller attached and 100% operational for at least 4 hours...!!!!!
Heat soak might do the rings in long before that point. The objective seems more for peak loads than continual.
I can see "reasonable" snow blowing in Winter where there's a lot of cooling ability and a turbo offers 2 to 4lbs of boost with some occasional 8lb peaks for drifts.
The thing is piston rings are already under a lot of load and incredible heat in a normally aspirated engine, adding boost to generate more heat and pressure--sure it's harder on the rings, but imagine how hard that is on the oil. If the oil breaks down at the ring-cylinder junction the ring wear is going to significantly increase.