I think he doesn't know how the automatic discovery of RSS feeds works, and just looks for a visual link to one. Like you said, he missed a lot of them, and is

I think he doesn't know how the automatic discovery of RSS feeds works, and just looks for a visual link to one. Like you said, he missed a lot of them, and isn't linking to his own feed properly on his site so that RSS readers can find it (with rel="alternate" and/or type="application/rss+xml").