You still need internet for this to work ;) these boxes only work in places where the internet isn't going to be shut down on a whim.
Countries that are willing to blanket the internet and do mass arrests aren't exactly the place where you want to be caught with those things.
This is the problem with all the so called "freedom" tools (tails, tor, various vpns etc.) and it is that they essentially only provide safe "freedom" to people who are already generally free.
well you can run something like the nextcloud box on a local network, no problem, and it's super cheap, too. If government blocks the pipes to services like Twitter etc, that sucks but doesn't block local, self-hosted services. They are hard to block unless you take down the entire internet - and THAT is an economic issue.
Again this is utterly pointless in any case where you live in a country that has no issues with blocking internet access.
You somehow think that a government that blocks the internet on a regular basis would have a problem blocking a distributed P2P network if it posed a threat?
All ISP's do DPI these days, many ISP's don't allow users to host services in the first place.
No to mention that the existence of the Box alone can put you at risk of harassment if not imprisonment.
Freedom tools are great if you live in a country that won't send you to prison for using a VPN, people seem to do not understand how oppressive regimes work.