People who are desperate are easier to scam because they 'want to believe.' They're looking for miracles because they think that's all they could hope for. I think it's less a matter of crypto people being gullible and more a matter of desperate people being gullible and consequently becoming crypto people. Organized religions often target the same demographic for the same reason. Born-again preachers love reaching out to broken junkies and alcoholics.
Considering the conversations I overheard about "crypto" in 2018, I'm not entirely surprised. There's a lot of gullible people who bought Bitcoin or Ethereum expecting to get rich.
Are these scams hitting "crypto people" or noobs who buy some BTC just to get in on the scam? The gift card scams aren't targeting existing gift cards; they tell people to go out and buy gift cards.
Because it's almost plausible? He's an eccentric billionaire known for his erratic behavior. Maybe one day he really does decide to shower the masses with a paltry (for him) $100k of Bitcoin. "It's weird and tech-y, just like him!"
In the last "doubling" scam I've seen a lot of people literally saying "I don't really believe it but the sum is low enough I'd send it anyway just to see what happens". Get a million of those, and you have some money. I personally don't understand what moves those people but I guess I have to recognize they exist.