Ppl are not thinking to deeply abt what problem is being solved. They are just reacting.
Telling everyone to build and grow audience is very nice, until you realize (1) the Total Available Eyeballs are not growing. So new problems are being caused by this unescapable fact, as ppl try harder and harder for less and less (2) lot of ppl who deserve attention just get drowned out.
If you ask the decentralizing crowd what should be done about it or whether their work is going to make a diff they haven't thought about it. What's the use of designing essentially decentralised broadcast to replace centraliazed social media broadcasts without thinking about the limited eyeballs/info overload problem?
Building an audience is a job for many people. It takes work to have your message be heard.