Why exactly is that? Because it’s reduced security?

There is the completely open source https://standardnotes.com/ which would support that via their syncing and the authenticator note type.

Unfortunately it does not look like their free plan allows you to use that note type. So could also host it yourself though (and pay for the premium token their or hack it out - it’s foss). Have never done that myself though

Kinda sounds like we need a decentralized, feterated internet archive for at least each nation and maybe individuals… Or maybe I just want to federate almost everything ^^’

Edit: found a discussion here on that topic in the comments