I think we should cut the guy some slack, here. He's laid out a structured plan for anyone to freely follow if they wish. Even if they don't follow it step-by-step, there are still some great tips to improve language-learning efficiency.
Personally, this looks much more effective than the textbook I'm currently using so I'll give it a try. We have no idea whether his timeframe claims are true or not (in which case, how can we criticize?) but any outcome of following his advice is going to be positive.
I speak three languages pretty well, two of them are of Latin origin (Spanish and Portuguese), and Spanish being my native language. I got really fluent in Portuguese in about 6 months, but those who know how close Spanish and Portuguese are, will know that that's not a hard task.
But to get fluent in English it took me some years, living in the U.S. I also know enough to understand Polish, but speaking it is pretty hard for me.
With that said, I can say with a lot of confidence that this guy is most likely to be lying.
Personally, this looks much more effective than the textbook I'm currently using so I'll give it a try. We have no idea whether his timeframe claims are true or not (in which case, how can we criticize?) but any outcome of following his advice is going to be positive.