The old Freenet project is now named Hyphanet and is available at https://www.hyphanet.org/index.html
Either way, pretty funny when a software project has to tackle questions like "what is property in the modern era?" and "what is free speech?" in their FAQ. That's how you know you're really pushing against the status quo, I guess...
That's an odd way of putting it, as if crypto scams were limited to the US.
Platforms do their best to take care of this, but these scams are so easy to run that you can automate them and spin up new accounts very quickly. Even if there are financial barriers it can still be madly profitable to accept the costs.
There is no clear way to deal with the concerns you mentioned, but I think playing too safe and not exploring technology will quickly put you behind the curb. Most of it can be resolved with good financial regulation.
So, whichever represents a bigger threat to you is largely a question of circumstance.