I don't think there's much that's accidental about it. The giant corporations with near-monopolies in web-related markets (browsers, search...) are going to be incentivized to put restrictions in place that protect that monopolistic status. As with other facets of life, they can dress up the changes as "protecting users/kids/etc" and mostly get away with it. The same companies are the ones championing the very technologies that make human attestation more and more necessary.