i'm not from silly valley, but its the dominant voice here.

some of my downvotes are from bad tone, overreaction, hyperbole... some are because of the silly valley culture not realising they are a bunch of deluded maniacs, or just producing absolute garbage products.

its mostly the former.

as for demographics... well, i'm a single data point, but HN has a wide reach. its why a lot of us are here imo.