Then all your desktop CPUs were defective.

Besides AMD CPUs of the early 2000s going up in smokes without working cooling, they all throttle before they become temporarily or permanently unstable. Otherwise they are bad.

I've never had a desktop part fail due to max temperatures, but I don't think I've owned one that advertises nor allows itself to reach or remain at 100c or higher.

If someone sells a CPU that's specified to work at 100 or 110 degrees and it doesn't then it's either defective or fraudulent, no excuses.