Well, after all those years smoking a pipe, and selling tobacco stuff, he's probably got lots of valuable experience to share. He's probably seen his share of douchebags over the years (not that you're one of them) and also become just a wee bit opinionated as well.
He's probably right about the perique, too. I've been smoking English blends now for about 10 years and most of the time when I think I can detect perique, I am usually wrong. And hell, I've filled up my pipe and smoked straight perique several times before. I tend to agree with him about the 1 lb/month thing, too even though I don't think I've ever smoked that more than once or twice; I don't have the time to.
While his response to your question was not particularly "touchy-feely," next time ask him how he can tell the difference..amd listen. You can buy your tobacco from a mail-order house any time, but my guess is this fellow is a fountain of knowledge, and you just have to continue to get to know him, and learn what he has to share. He's probably not an asshole, just someone who's been around the block a few times and is careful who he shares with. Let us know what transpires.