Apart from the CEO's posturing, it seems like the "More Tweets" shown around other tweets to unregistered users are now heavily skewed towards that demographic

Apart from the CEO's posturing, it seems like the "More Tweets" shown around other tweets to unregistered users are now heavily skewed towards that demographic even when wildly irrelevant to the actual content being looked at (the popularity of certain commentators producing that sort of content isn't exactly unique to Twitter, and nor is the other irrelevant tweets mostly being cat pics, but I suspect the fact that nearly all the politics Twitter randomly surfaces to people who haven't cultivated a profile with the opposite preferences is of that ilk probably reflects who buys the blue ticks...)