Isn’t perplexity a normal English word? Does an average American not know what perplexity in the usual sense is? The word has a meaning outside of AI, too. Or would they only recognize „perplexed“?
The average person definitely doesn’t know what perplexity means, and even perplexed is itself a bit of an advanced vocabulary word.
It's not a nonsensical word. https://en.wikipedia.org/wiki/Perplexity
Perplexity is just a nonsensical word (for those unfamiliar with the concept) that is too long and hard to spell. They'd be better off just chopping it down to Lexity, or Lex, or Plexity, or Plex, etc.