What exactly was the point of this blog post? Quite a few of those reasons are valid and none of the arguments against the 10 reasons are good. It reads like "OMG BUT RUBY! MY PRECIOUS!!1"
People like to talk about their hobbies (and jobs)! Nothing wrong with writing down a few bullets about a language, especially since programmers like to argue about which language is the best.
I assume it depends what you're going for. If you mean to make a fun blog post, maybe (though in my mind it's taking itself too seriously for that, despite occasional jokes, and it comes off as immature instead). If you are trying to convince people to switch languages, and flat-out refuse to acknowledge your favorite language and ecosystem has any weakness, not so much.