Scroll down to the bottom of the article, he's offering a free e-book. And seems to have himself in plenty of places online so I'm guessing the freebie and the blogging might be about promoting himself as much as anything.
If someone wants to learn more about street photography it might be better to look up known street photographers who have done it well and look at their work. Anybody and 'everybody' can do a blog, a website, etc., it doesn't mean they necessarily have much expertise or are good at what they're doing.
I've done sports and events and I agree that street photography is related to photojournalism. If you photoshop a pole out of the picture you're basically lying about what was there. If you adjust the contrast you're de-emphasizing it, maybe because it's a distraction and not adding to the picture but circumstances were such that you couldn't keep it out of the frame.
A good photographer would move around and change the vantage point or adjust the framing to keep distractions out of the frame as much as possible. A capable photographer would know it involves timing, and a certain amount of waiting and watching as people move in and out of the scene/your viewfinder.
In sports/photojournalism most adjustments done would be minimal and basically comparable to what would be done in a darkroom or with film images - adjust brightness/contrast, maybe slight cropping, etc. Street photography seems similar in that usually a moment is being captured as it happens and a lot of editing wouldn't usually be needed or done.