I just did an informal (ie verbal) poll over four non-technical, but intelligent friends. I said "Have you guys heard of Facebook Promoted Posts" 3 yeses and 1 no. Then I said to the yeses "Has it changed your Facebook experience in any way?" One friend said "Not that I know of" and the other two agreed.
The only people who are upset about this change are advertisers and geeks. Facebook isn't burning any bridges tweaking feed rankings in the exact same way Google doesn't burn any bridges when they tweak search result rankings. Advertisers aren't going to flee Facebook for the same reasons they haven't fled Google: Facebook and Google own the eyeballs. Advertisers go where the eyeballs are. Full stop.
This seems like a brilliant move for Facebook. Users see fewer posts by Pages. Facebook receives additional revenue. And the big spenders in advertising are so delighted with their increased impressions, that they are willing to spend even more. Seems strategically sound to me...