That StackOverflow post is hilarious. Who actually justifies slow performance by quoting the limitations of humans ?

Here's a thought for that genius. What if I am showing a dynamic graph with that table .. or I have complex rows .. or animations .. or a trillion other use cases that he can't seem to envisage ? And people on slow computers or mobile devices obviously aren't welcome.

Anyway here's a performance comparison: http://jsperf.com/angular-vs-knockout-vs-ember/82

AngularJS does need some work. But so does every framework. Far better to be honest and upfront about your faults so you don't waste your user's time.