Except we don't know enough about the project to do so. And it seems like those involved in the project that could do so have no interest in doing so.
This is not a "blame the people who complain for not contributing" thing. This is a "the people who are presenting the project are doing a horrible job of it."
I'm the GNU social founder, so please talk to me about a horrible job.
I think there's a misunderstanding in this submission, and perhaps around the project in general. The goal of the project isn't to provide a social network, or to provide an alternative to Twitter, but rather to provide some software that can be used for a bunch of things, and using it instead of Twitter is a subset of that.
I chose the name because I didn't want people to think of it as a "GNU social network" (GNUbook, GNUspace, etc) but rather just software that could be used to enable communication between people.
Some people have made interfaces for it that mimic Twitter, and a lot of people are using it for that kind of communication, but I don't think the project website has to make it easy for people who want to quit Twitter to use GNU social, but we can certainly point people at servers and interfaces that do that job.
This is not a "blame the people who complain for not contributing" thing. This is a "the people who are presenting the project are doing a horrible job of it."