Why does it always devolve in to one of you steelmanning your insecurities?
CPU degradation would depend on the quality of the silicon, that's TSMC silicon, if that was poor it would be a story.
Intel's CPU's have a history of burning the CPU socket, but not from some mistake made by the motherboard vendor, they have burned socket from simply drawing too much power.
I have had a lot of CPU's in my time, from both AMD and Intel, all of them have been pretty reliable, including my now 3 year old 5800X which is running 18 hours a day every day and has never put a foot wrong, its kinda boring when things just work and keep working without complaint, its as fresh today as the day i installed it, there are many more trouble free years left in it. A decade, i have no doubt.
I have never had a problem with any Intel or AMD CPU. CPU's are the most reliable long lasting thing's in a PC. they are the only thing i'm confident in buying used.
Please, lets just stop with this nonsense.