While juvenile, it is a fair point that github and all websites that ditch everything for javascript get less snappy to use.
We don't know how these decisions are made, who is making them, or more importantly, why they're being made. And attributing all of that to the developers being monkeys make me think the author has never actually worked for a real company before or is conveniently forgetting what it's like to.
(Not everyone is as polite as you lemon. Seems like the majority of the internet has namecalling tourettes :)