Agreed, in a way.
Overclocked processors usually degrade faster because it requires higher voltages (not the input voltage to PSU, do your research) to be stable and it will surely generate more heat than a stock procie.
But a stock processor can degrade much faster if the cooling system isn't working as it should be or the room temperature is too hot; it's the timeframe when there's "too much heat" that is directly causing to the degradation.
[What's causing cooling problem? Read the replies to your new thread ]

In the end, it depends to the OC setting, cooling, maintenance, PSU quality and the parts of the ASIC/GPU (GPUs have a central processor too).

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