Web 3 was never anything but marketing nonsense. To be fair, that was true for Web 2.0 as well. Web 2.0 was always about rebranding the internet as a profitable thing for high finance to invest in following the 2000 dotcom crash. It had nothing to do with any particular technology, and O'Reilly's manifesto about Web 2.0 was filled with nothing but marketing slogans. After all, he was just a knock-off "Windows ME for Dummies" book publisher who stumbled on a con that San Francisco financiers loved to use. Almost 20 years later the crypto weirdos - who had been at their own con for the majority of the intervening years - thought that making a sequel of O'Reilly's Web 2.0 con would be an excellent idea. It's bullshit all the way down and always has been.