pure speculation. I actually have one of these CPUs. I don't overclock it, but it has been great. I even have used it to train a CIFAR10 dataset using RESNET50 model on the CPU. The entire process took 54 minutes and the system was running fairly cool the whole time.It doesn't look like that's the case. Most people I heard of had problems at stock settings. Intel and their board partners themselves pushed the CPUs too much. But the root cause is that 13th gen has not been sufficiently validated. The engineers knew about possible problems back then. But 13th gen had to be rushed out. 14th gen just suffers the same problems because it's the same silicon.
I do use a rather higher end Noctua air cooler in a build I did myself. Probably a ton of people don't know how to properly cool the CPU.