Only ones that would fall for these would probably be newcomers that are greedy. That's about it. Otherwise, it's obvious to anyone that it's a phishing email. But new people to bitcoin probably wouldn't even have their emails leaked in the first place, unless they sign up to a crap ton of dodgy crypto sites.
This is pretty similar to the twitter phishing comments where they someone says send x amount and we'll double your money, etc.
Note that almost all of these phishing scams revolve around the greed of the recipient, or whoever is reading the content. If you see any piece of mail, or post, saying that you'll be rewarded handsomely for doing something really easy/sending money to them, think twice before doing it, it's probably a scam.
I wonder if the email went directly in your inbox and not in spam folder.
Anyway, you can try
https://haveibeenpwned.com/ to see if your email has been compromised in a data breach. Cryptopia insists that their site wasn't hacked before (
during the failed log in attempts issue), and recommended this site to check too.
I don't think it includes all leaks, though. New exchange leaks may not have registered in their database yet.