Temperature spikes are NOTHING to these cpus. Constants are a greater issue.
Take that cpu, and set it up so that it runs around 100C constantly for 8 hours a day, for an entire month... THEN come back here about damage.
There's no issue to solve; beyondlogic succeeded in planting unnecessary doubts.
Temperature spikes are going to vary. There are multiple reasons for it, be it:
-silicon lottery; expect your 14700K's cores to be better and worse than others.
-different, or differences in yours and others' motherboard settings(Vcore, load line, OC may/may not be applied).
-software you're running on your PC, compared to others.
-the cpu cooler. Some do well with Intel's dies that are focused in the centrally, but are lacking on AMD's offset dies. The opposite is also true. Some coolers can do both well. [Unfortunately, this kind of testing isn't done by many.]
-when AVX instructions kick in within the game code. These have higher voltage and power demands of the cpu, and could be responsible for some of the spikes.
-power plans
All that stuff complicates things, and I likely still left some factors out.