But the rules for D&D are not written or intended for that purpose. The rolling systems are meant to be used in dramatically appropriate moments. When the outcome is uncertain, as you say. When there are consequences for failure. This is not a mechanic intended to be used to, say, simulate a Chess Grandmaster playing against a newbie. That's not within its remit. Not part of what the design is intended to cover.
GMs calling for rolls in mundane situations for trivial tasks are simply misusing the rules.