Mosfets have lifetime depending on the temperature, so yes. But on the other hand vendor can install components which won't fail for some long time even under max load. If I remember correctly this was the reason for the "New World destroys GPUs", because some vendors didn't read the Nvidia spec carefully and installed less robust mosfets, so the max load (which happened to be New World game) pushed them over the expected lifetime fast. But with proper design this seems not to be a case.