Ahh, okay, now I better understand the specific type of decentralization you are looking for.
I believe there might be one possible solution to achieve what you’re looking for.
Then, a clearnet user would theoretically be able to access the Freenet content through a standard web browser.
The issues with achieving this are 1) getting working code for an embedded browser client 2) getting clearnet web hosting for the webpage or at least embedded client script if able to use a free blog/website service.
However, this requires layering a Freenet site on top of a standard clearnet webpage.
It’s basically a way of making your own personal Freenet web proxy. Which requires you to also have some non-decentralized website on the clearnet as a frontend for people’s browsers to access. But it wouldn’t necessarily have to be on your machine.
This frontend clearnet webpage would be vulnerable to attack, so you’d have anonymously get a frontend webpage hosted and be more ready/willing to sacrifice it if need be and move to a new URL/IP.
Your configuration could be…
Onion.to --> Tor Hidden Service --> Embedded Freenet Client --> Freenet Site
Clearnet Webpage --> Embedded Freenet Client --> Freenet Site
It would be more ideal for you if someone offered a Freenet web proxy as a general public service, like Onion.to.
Developing and offering a Freenet web proxy to the public could at least give you added plausible deniability for any one Freenet site accessed through it, but might draw more negative attention for being the provider of such a public service.
Without having a Freenet (or similar) web proxy service or frontend webpage embedded client, all of this is probably not worth the trouble, though.
Based on balancing convenience with your technical goals…
Maybe there is a reliable free .onion Hidden Services hosting provider out there? To be accessed via Onion.to by clearnet.
That way, you wouldn’t have to worry as much about it being linked to your personal IP/identity, if hosted by an intermediary provider.
I haven’t used Freenet in a while and haven’t looked into the details of the protocol, but to assume it is impossible to be attacked or identified or shut down if using Freenet or something similar, just because it is decentralized across machines, would not be a impenetrable assumption. You’d be largely dependent upon the theoretical future-proof strength of their protocol and implementation for your stated goal of being absolutely stealth and invulnerable to the most powerful organization of hackers on the planet. A very tall order. Your setup would still be open to vulnerabilities like encryption cracking, endpoint compromise, and node impersonation or surveillance.