> Why should it? What problems would they solve?
We clearly do have a problem. No 1 learns from past mistakes. We keep reinventing the wheel e.g. the land of NodeJs, Javascript, etc. Even within companies there's no learnings passed down. Each new hire thinks they're the best and tries to redo it all.
> Are you so afraid of competing with those who might not get a certiciation?
I rather compete on certification than compete on leet code. Do you miss the point that the whole leet code system has nothing to do with any job? At least certification might be slightly be relevant.