I noticed that this post is from January 2016. It would be interesting if anyone followed his advice and succeeded or didn't. I also noticed he had another blog post from 2013 titled "My Advice to Aspiring Authors" that seemed to me to have a somewhat different tone.
The indie author gold rush was basically 2012 through now. It's still in full swing. But much like the California Gold Rush, it's beyond a saturation point. There are all kinds of sharks in the water, selling seminars and promising riches.
