It's not like everyone is going to switch, but some people--especially on HN--might, so it's definitely worth reading about. I certainly know some startups considering functional programming, largely because so many people seem to like it.
Also, if you look at other popular technology like OOP, they were pushed even harder than functional programming. When I was initially learning programming, I read a ton of books and articles all advocating it. Similarly, I've seen more people advocating Python than Haskell, and that worked too.
So maybe it's not enough by itself to make seething popular, but it seems necessary or at least very helpful. There's certainly no reason to stop trying!
Also, if you look at other popular technology like OOP, they were pushed even harder than functional programming. When I was initially learning programming, I read a ton of books and articles all advocating it. Similarly, I've seen more people advocating Python than Haskell, and that worked too.
So maybe it's not enough by itself to make seething popular, but it seems necessary or at least very helpful. There's certainly no reason to stop trying!