I have reason to believe that the various Corp/Gov influences are disrupting the developers of the blockchains that will really address the current patterns of power.
The new ideas grow from quiet people who develop in obscurity and then release (like bitcoin itself).
For example, a cryptocurrency that backends a social network would put communication control in the hands of the people instead of marketing money and government filters: All the successful cryptocurrency-backended social networks are either closed source (akasha), transformed to something else (also akasha), centrally hosted (steem), or died from a surprise and lost their support base (qora).
Doing projects in a way that has all the attributes is obvious: but the projects that do this and stay alive have evolved to not be found by process of natural selection.
We could support a public one by being aware of the danger, discussing it, and taking action to waylay it. I had some success with BSV by warning the devs about the situation a little before posting new materials to their chain. This meant what I said would be taken more seriously if the problems I described arose. The chinese gateway I was using to access the files no longer serves the protocol they use, but it is simply a small maintenance issue that anyone could fix by simply talking about it persistently while demonstrating ability to fix it.
Maybe what punk-stasi is raising is, is there a good blockchain or development community to provide support for that might grow to be better? I am using BSV only because it lets me store undeletable data easily, which I need. I do not really use money myself, but appreciate how more free economies can reduce global harm by sharing power.
I believe bitcoin core to be the most secure.
It sounds like the answer is crosschain technology. A community for such technology would probably have a lot of links to "third-gen" obscure altcoins struggling to resolve all the "obvious" problems.