If you look closer at them you'll notice most of those rants are "feels wrong" type rants that could be levied at almost any framework the author doesn't particularly like. The only solid complaint he has is a performance test which, again, both Angular and Ember perform poorly on, and in the same breath he admits these issues are easily mitigated but laments that they aren't mitigated by default. He uses it as an opportunity to praise Backbone which further fits his "large frameworks are bad" premise which is what the article should have been titled. But hey, based on how quickly this article shot to the top of Hacker News it appears his more link-baity title was effective.