Puff piece or not I don't get what you want from him? Scans of their IRS taxes? It's an article to show what they did, not a step by step manual, will every single detail. Now if he lied, he'd be called on it
How about something a little bit more than "it worked" and "business tripled". An analysis of contributing factors, maybe. There's so much bullshit in the media with people claiming things that are half-truths, or outright lies. It'd be nice for something like this to have some actual justification to support it. Warts and all.