I would argue that the situation for Web 3 is slightly different, because one of the motivators for its development was perceived bias on the large platforms. For example, shutting down discussions or demonetizing content in furtherance of political narratives or agendas to turn Web 2 into a propaganda machine for the establishment. One of the things people are looking for here is the same content they could find on Twitter or YouTube, but without the censorship. In this sense, duplication of functions is both good and expected.

But it should not be limited to that, for sure. Innovation should be the watchword for Web 3. But in part, it's an attempt to patch the flaws of Web 2 and enable freer expression.