Ryzen hasn't even been out there long enough to make a claim like that. So i'd say that's he's just too biased towards Intel.
With that said, olders FX chips do tended to be hotter then Intel's, but with a decent cooler they still had a shorter lifespan? Nah, never heard of it.
Current Ryzen CPUs are great, nobody would buy something if was going to brake sooner or later wouldn't they? CPUs are very very sturdy, you will probably want a whole new upgrade before it even thinking about getting damaged whatsoever.