Caeglathatur I think he was referring to the current limitations apparent with mastadon, peertube, etc. MrSatan feel free to correct me if I'm wrong on that.
It's just not "easy" to use. Folks like you and I @Caeglathatur...and everyone on this forum, I'd wager...we know that "easy" just means figuring it out and working within, then around the limitations of the system, service, or whatever it may be. For the average end user, they want no more than a few clicks.
So I just joined Mastodon. Selected a server, set my language to English. I joined the recommended server. It's all in French. Well, good thing for me I have 6+ years of French under my belt. Let me see if I can change the server easily......nope. I tried 1 client off the Google store. Not any easier there.
On to peertube. First off, the only client on the Google store looks fraudulent, seeing that the developer has only one other app. Let me look for the website....ok, getting lots of different links, and they all go to different sites. I think I found the right one. Click the install app button.....oh wait...reading. ok ok ok....looked at it for a minute or two.
And please mind the snark. I'm not directing that at anyone. I'm doing it to illustrate the non techy individual. So without delving into and figuring it out for more than just a few minutes, my interest and engagement is completely lost as an end user. Now, I'm going to invest a little bit more time and see what I can do to make it easier on myself. But for my wife? My teenager and 2 of my 3 sons? Their brains don't work like that. If they can't figure stuff out, the tend to fold their arms at that "solution" and move to the next one. And I know people, including myself, probably rage at that line of thinking sometimes. But, honestly, that's the majority of people. There are creators and consumers in every field. The higher degree of focus required for any given field reduces the amount of creators and increases the amount of consumers. I'm sure that's called something or has a technical term.
To answer the question....yes, it can replace current models....and probably will at some point down the line. But change has to be simple and small for people to easily adopt it. When you add "ifs", "buts", etc...no matter how insignificant it may seem to you or I...you turn people away.