The founder has a Masters of Divinity from Westminster Theological Seminary as it says on their website, it's a useful website sometimes that's all I use it for, as for their background who knows?
Now onto my next point, did Paul Himself regard his own writings 2 Tim 4:13 to be inspired? If there were any passages that contained uninspired remarks, comments, or statements of fact it would have to be in Paul's letters. There are times when Paul says he is merely communicating his own opinion, rather than receiving a command from Christ. These are obviously not from God, as the author said so himself! In doing so, Paul himself in his humble nature, does not presume that everything he writes is "from God".