Someone who fails. The usual pattern is: new learner goes all-in on RtK, makes it a month or two, then gives up after realizing that they’re making no discernible progress, even though they “know” lots of kanji.

There are useful parts of RtK, but they’re the parts Heisig didn’t invent: radicals and mnemonics. You can (and should) employ both, but in the context of words. As you learn words, the “meanings” of kanji will naturally settle in your brain.

RtK people love to argue that it helps them infer the meanings of words and discriminate similar kanji. But in practice, it’s insanely difficult to do the former (except for simple words), and the latter is rarely necessary. It’s far more common to encounter 2-3 kanji compounds with unique meanings that recombine into words, than it is to find words that compose meanings from their individual kanji.