While I agree that Hacker News always hated technology, this article in particular looks like like self-parody. There are 0 mentions about language learning or

While I agree that Hacker News always hated technology, this article in particular looks like like self-parody. There are 0 mentions about language learning or course quality in a blog post about how to grow a language learning app. Instead, the discussion turns on the way you give gems to users, late-night notifications, and the maximum amount of emails you can send per day before people start unsubscribing. I get that this is a blog post about growth, but it says nothing about the product and you could :s/Duolingo/Candy Crush/ and the text would be equally valid. This looks like a fake blog post from Hooli in Silicon Valley.