The only people for whom Bigfoot is real are those who have witnessed one. The rest of us are voyeurs, and stand like the spear carriers on the back row of the chorus of the opera while the large lady out front in the horned helmet sings her aria....we know something is happening, we just don't know what it is, do we Mr. Jones?
Most of us with half a brain understand it is rude to appear to know it all when we haven't done the homework. Naish appears to be of the other kind. That you could get a piece published by Scientific American by trotting out all the old tropes and bundling them up as authority because, you know, you are a SCIENTIST! is not too surprising at all. But, (As DWA would remind us all...) Science is as Science does.
A million Naishes spouting that view is no more valuable to science than a million bee-lee-vers spouting the opposite. They are cut of the same cloth, and neither help get at the truth.
And I'll say it again, if this all a social construct, THAT headline renders the idea of BF ho-hum. But let's play that game for a second, Mr. Science Man: You have your hypothesis, now tell me how you test it. I'll tell you how, and this where every one of these poseurs shirks their responsibility to their discipline: You make a serious effort to prove existence, pull no punches, take no prisoners. (Don't waste your breath telling me that has happened already...HA!) Failing to find it after that is done? Well, I'd switch my bet, I can tell you that. Until then, blog away.