I don't think it's accurate to say that this is a guide "most" Japanese learners follow. There are some good (and some arguable) ideas there, but it's just one guide out of several, and most learners probably don't even browse the internet for such things and just learn Japanese in class or something.
i bet 99% of people will wash out of the 30 day routine, me being one of them. there are better ways to start than drinking from the firehose of "simple anime"