Yes you are correct. Most of the "big wigs" are not real content creators but simply self promoters. Usually when you go to their "blogs" or "channels" you find some crappy useless filler. That being said, it would only take some minor tweaking to change it. Less value for stupid useless tweets and more for real views. Google Adsense doesn't seem to have much trouble telling the difference. Ask the guys over at Warrior Forum about SEO and Panda vs. Penguin.
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P.S. I've never even bothered to take the time to figure out much about SEO. I'd rather create content.