I love how "MBA" is thrown like a cuss word around here. Makes me feel at home. I thought along the same lines by the way. He does have a point that customer experience is a part of making a successful product. After all, customers don't want to make an effort to do something. They paid for it after all. The engineering though is the gateway to everything else and hence the most important part of actually making a product. If you can't do that, you don't even have a product to sell.
"I'm deeply passionate about product, UX, customer experience and nearly any topic that involves startups"
Snakeoil salesman.