anecdotally, every prepper type I personally know falls under that category (the petty vindictive hope of everyone else getting screwed while they have the last laugh)
While Reddit is hardly a representative sample, it's not a bad example – and there is basically zero vindictive content on https://old.reddit.com/r/preppers/
Bit of confirmation bias, no? The other people that have prepared don’t talk about it because it isn’t a big deal to them.
Or definitional? A "prepper type", by definition, is one that talks about it (a lot).