I wouldn't bet on that either, but they're less mainstream, less respected, and most of us no longer feel a particular urge to humor them. Every passing year makes them less relevant, and more like the sort of people who believe in any other conspiracy theory or magical belief system.
Which is frankly where they always belonged.
> the sort of people who believe in any other conspiracy theory or magical belief system
Bad news: this has gone completely mainstream. We're deep into government by conspiracy theorists.
> magical belief system.
To be fair, if one includes religions this is significantly more than half the population. Add in astrology, psychics, ghosts, crystals, auras and other common 'woo' and it gets higher still. Sadly, HN is not a representative population sample. Skeptical non-believers are still a minority in the modern world.
At the other end of the spectrum, the belief that the moon landing was faked seems to be steadily increasing in popularity. I don't get it at all.