So I usually swap my GPU every other generation after ~5 years or so, CPUs less frequently, but I always give the old parts to friends, family or colleagues and I Haven’t heard of a single defect yet. So yeah, I just don’t believe that heat related failure is something I should have to care about at all. Instead, I’d rather optimize my cooling capacity towards silent operation.

Other than that, the throttling limit already is the throttling limit where the hardware operates well at, not the limit which at which the lifespan gets noticeably affected. Those are much higher. This isn’t like hardware from 20 years ago anymore.