1. "The Internet leveled the playing field for indie music." Not quite. Imagine you're in a stadium filled with a hundred thousand people who are all raising their arms as high as they can. The only way you can get noticed in that crowd is not just to get your hand a little higher than the rest, but a lot higher so you can't be missed. That's the trick of marketing, getting noticed in a crowd. It takes the same serious strategy to make it happen regardless if you're marketing on-line, to print or broadcast media.
2. "I'm going D.I.Y (Do it yourself)." If only that were possible. You can probably get started by doing everything yourself, but at points along the way you'll start to need specialists in order to stay successful or become more successful. Pros are pros for a reason - they're good at what they do, and they can spend the time on aspects of the biz that you're either not good at or hate to do. You want to keep making music, right? That takes up enough time to do well let alone having to concentrate on management, marketing, web, getting gigs, etc.
You can read the other points on Bruce's blog, but I couldn't resist commenting on the above.