They suck but, driving like that for 20mins should not burn out a clutch.
Not true :) By experience!
I drove a turbo Chrysler 4-banger in 4th gear, due to mangled shifter cables, for 20m to a dealer. Perfectly good clutch was burned to shreds.
>> “They suck but, driving like that for 20mins should not burn out a clutch.” <<
Back in the day when clutches were made with asbestos, you would be right, but a kevlar clutch can be toasted in one long slip start. If the clutch is engaged when the engine torque is at max, God help the clutch.