Back around 1963, my brother bought a stick-shift '59 Ford Galaxie that was seemingly in good condition. It ran very well for several months, with no indication that the clutch was problematic.
However, after he skidded into a snow bank and tried to rock his way out of the snow bank (without snow tires), he wound up killing the clutch after about 20 minutes of slipping the clutch as he rocked the car back & forth. The moral of the story is that the clutch probably would have been okay for another 10-15k miles, but 20 minutes of this treatment was enough to wear out the clutch.
Everything is a matter of degrees, and when the clutch’s time comes, it comes.