As someone who is fluent in Japanese, the thing is that this is not an example of a method that works well, it’s an example of a beginner coming up with an overwrought headcanon (while calling it “simple”, nonetheless!) that ultimately will hinder their understanding, as I will detail elsewhere.

If this was a similar post about programming, it would not get upvoted here because more people would recognise it for what it is: a “Monads are Like Burritos” post from a well-meaning but misguided beginner.

E.g:

> not so lucky and got a "ru" ending? check what vowel before the "ru". it it's one of -aru, -oru, -uru, then it's also a godan verb.

Wrong: 煽る (aoru) is ichidan: 煽った、煽りたい、煽らない、煽ろう、煽られる 。。。