You could always change that. Reroll a nat 1 and only fail if you do it again? lowering the chance of it happening.
they are merely mentioned under Rule 0
And there's part of the (arguably impossible) challenge of bringing a human-moderated interaction to a machine-moderated one. A level 1 thief is more likely to break their tools than a level 20 one. A level 1 fighter is more likely to drop their weapon or trip than a level 20 one. If playing with natural 1s and 20s the old AD&D way, the human in charge has lots of leeway to do it eloquently.
Unfortunately for the machine, it's stuck with either a broad-strokes attempt at this, what we have now, or some complicated set of heuristics that nobody will be happy with.
Better to not even go there in the first place.