I think the ramifications might be slightly deeper than that; it allows you to see if you really will get traction behind your MVP before you bust your balls ov

I think the ramifications might be slightly deeper than that; it allows you to see if you really will get traction behind your MVP before you bust your balls over the UI, without having your site look like Craigslist. HackerNews is the perfect example; very simple, flat, but doesn't get in the way, and allows you to use the site in a very functional way. You can add the flashy design intricacy later if you want, but I hope that most people won't. I love the simplicity.