>>213624625
its usually 2 main readings
sure there are kanjis with way more readings and many irregular readings even for simple kanji (like 五 is go but then theres 五月雨 - samidare and 五月蝿い urusai) but you just pick them up naturally like natives do if you interact with the language
its not a big enough problem to warrant a reform but it does cause inconveniences for natives especially for things like names/place names/handwriting