I still think Katzu comes across cocky and is too quick to dismiss formal classes. The way he rips on beginners' stumbling and poor pronunciation etc. makes him seem like a few people I've met in classes this year, who seem to feel they're too good to be there, and regards anyone not on their level with a certain amount of contempt.
Read all of his stuff. If you had, you would have seen that he doesn't condemn stumbling and even acknowledges failing as a very large part of the learning process when it comes to --anything--. "You have to suck before you can be awesome."
Also, solely using flash cards to learn kanji won't teach you how to write them. You NEED to write them if you want to have any chance of reproducing them in handwriting. Personally, that's a level of literacy I want to obtain.
Once again, somebody didn't read. Writing is at the core of the kanji repetitions he's advocating. It goes like:
1. Story for kanji comes up in the SRS. For example.
"Tophatted animal picks up six" (Kanji's definition is underlined)
2. User takes out his notepad and writes down the kanji to his best of memory.
3. User grades his own performance and presses the corresponding button in the SRS (Do it Again, Hard, Good, or Easy).
4. User is given another story. Rinse, wash, repeat.