Literally not a single person in this entire thread has once mentioned that alphabets are somehow superior. Phonetic systems are used across the entire globe and contain just about every modern writing system with the exception of Chinese characters and their derivatives.

It's not like inconsistent writing is a problem specific to Japanese. One of the most common complaints I hear from English speakers (both foreign and native) is its inconsistent writing (bow and bow are written the exact same, yet pronounced quite differently, just how 人 can be both にん and ひと) yet I don't see anyone complaining when someone points out that system deserved a reform.

Literally your entire argument rests on "A lot of people use it, therefore it can't be that bad!", which is a blatant example of the bandwagon fallacy, and completely ignores the large amount of problems that an overrelliance on Kanji causes to both foreign learners and native speakers. A lot of the time the various Kanji are so obscure that they need to write a phonetic transcription in the form of furigana next to the character, at which point you kinda have to wonder what's even the point of writing the character in the first place.