I certainly didn't know that this time last year Ed. I had always thought that blokes answering to the description you have given were the most low-down, devious skunks it is possible to imagine.
I myself have a longish face, inflexible jaw lines, thick eyebrows curling up at the corners, eyes like piss-holes in the sawdust, flaring nostrils, average mouth, average lips and a somewhat sallow and nervously expectant complexion and a bushy beard.
Am I to take it that "modern-day facial stereotyping" , who or what that is, is a credible source which we can trust.
I think that a guy who stands at a mirror every morning scraping his face with a sharp blade, and looking every bit the sap he is in the process, might just be doing it so he can go to the Either Way Up Club once a week. There is vanity all over it. Especially when there's a moustache involved. So I don't go with your source. It was flattering its audience. Giving the egos a blow-job. Tried and tested. It sells.
One has to wonder why they feel the need to be told they are trustworthy again and again.
I get black looks too.
Our Father always has a beard.