Thanks for the suggestion. What is your reason for suggesting this?
In the off chance however slight, that Trump forces prominent "China" forums offline... then at least there would still be people who were pre-seeded with offline copy....
Take r/sino for example, if US gov wanted it offline they just have to pressure Reddit.... but if they wanted SDF offline, they would go after the hosting, cloudflare/CDN, get Google to cut your ad revs, delist you from search engines, and possibly redirect your dns or a dozen other ways to go about it...
AES-256 for all intents and purposes is uncrackable given long enough password high entrophy... Sure you could put it inside a TrueCrypt or VeraCrypt container and run triple cascading ciphers but the 7Z AES-256 encryption is "good enough" and most people know how to use 7z, much less people use VeraCrypt or heard of TrueCrypt... you can generate a high entrophy 140 character length password using keepass and randomness from mouse cursor and keyboard typings, it will be long enough to be forever uncrackable but short enough to fit in a txt or twitter.
By doing this ahead of time you don't have to wait until last minute and it gives members time to each download a local copy (essentially seeding this site worldwide) and if the situation in the world never develops that it becomes that unstable then the day never comes and the decryption key never gets released and all is fine....
But say the world gets crazy in a couple months, Internet gets fractured or large part shutdown, and all China resources online get taken down, then at moments notice you can merely release the decryption key enabling all people worldwide who had previously cached/predownloaded the encrypted version to now have a full backup/copy of the entire SDF site unlocked and ready to be viewed/read locally and also that gives them the option to rehost it in the country/domain of their choice etc...
Consider it like a contingency plan and seed vault (knowledge vault) all rolled up in one... It would be a pity for all this information to someday be lost to the ether... It boils down to survivalbility planning, not necessarily of this site, but at least of the information itself. It is like insurance policy if you never have to use it, nothing is lost, there is no harm, but when if you do need it, would be good to have.