I like this response. If we can justify wearing pocket squares, which are not functional at all (unless you're one of those who use it to blow your nose), why can't we justify wearing linen scarves?
Why not ascots? Or a boa?
Linen scarves are fine for what they are, which is a fashion accessory. I think it's a bit affected, but whatever. Some people would consider the Panama I'm sporting today a bit affected. And goodness knows that's not the most affected thing I wear.
As long as the wearer is down with what it is, I see no problem with it. I just think it's silly to try to justify such things by citing feeble utilitarian explanations. Summer scarves will be seen about as often five years from now as they were five years ago, yet men's necks will survive.
I does strike me as a bit funny to see such an overlap between MC and the Urban Outfitters scene. The mall hipsters in their skinny jeans and small-brimmed hats are rocking the summer scarves like crazy.