also Hitler was an effective leader, which we should all remember as a cautionary tale about how effective horrible people can be

That is not a factual claim. He was very effective at gaining power, but his actual reign was far from effective, most of it counterproductive to his own goals, and the actual system of decision making in Nazi Germany was a huge mess.

Well some of us have, but a huge swath (perhaps a majority?) of people haven’t and will happily continue to use these things as their main entry point for information seeking on the internet.

Again, this is already being done infinitely more efficient and secure with existing technology.

NFTs doesn’t let you own anything but a link. And it is inefficient, insecure and energy wasting. Also you can already do what you are suggesting with existing technology.