The idea that one should learn kanji first just to start learning Japanese is utterly nonsense. The author has Stockholm syndrome.
If one's mother tongue isn't Chinese/Japanese, I guarantee you that's impossible to understand kanji/hanzi as deeply as a native speaker does just by spending 17 months on memorizing how to write them. It simply never happens. Languages come first and writing systems come later no matter which target language you're trying to acquire.
Even native speakers get confused about their own writing systems. It's vs its. Should've vs should of. Doppelganger vs doppleganger. Being able to wield the writing system like a wordmaster is a big plus and a praiseworthy effort. But it really isn't the essence of language acquisition.
If one's mother tongue isn't Chinese/Japanese, I guarantee you that's impossible to understand kanji/hanzi as deeply as a native speaker does just by spending 17 months on memorizing how to write them. It simply never happens. Languages come first and writing systems come later no matter which target language you're trying to acquire.
Even native speakers get confused about their own writing systems. It's vs its. Should've vs should of. Doppelganger vs doppleganger. Being able to wield the writing system like a wordmaster is a big plus and a praiseworthy effort. But it really isn't the essence of language acquisition.