Maybe it doesn't matter if you are ok with getting trading ideas from somebody who doesn't trade for a living.
I prefer practical approach with ideas that can improve my trading/profitability
I also prefer the practical approach.
I think there must be a crossover here...I'm not concerned with Covel the seller of xyz...but as an author.... somebody has to write these books...and at least he is writing about successful traders and includes a lot of their quotes.
It's these quotes and nothing else, that should provide food for thought.