Every time Haskell is discussed, lots of valid critiques show up as to why it's not more successful, and yet every single time, without fail, the conversation devolves heavily into "People aren't smart enough." The person I was responding to literally said that Haskell wouldn't catch on because most developers aren't smart enough, and then defined "smart" as those three things.

I am arguing a series of things. First, that being "smart" does not always mean those three things. Second, that being "smart" does not mean that you'd care to learn Haskell. Third, to suggest a tool isn't catching on because the members of the programming community aren't "smart" enough is so masturbatory it's actually insane. God forbid Haskell isn't catching on because of all the valid critiques that show up in every one of these threads and then gets dismissed under this same "Haskell smart" rhetoric.

Haskell will not catch on because the community thinks it is too smart to have to actually accommodate the programming community. Simple as that.