In addition to exporting one's contacts from Facebook in order to import them into an alternative, there should be a way to use whatever is provided through Facebook's "Download your data" to populate new accounts in the new alternative.
Perhaps it already exists but I have thought about writing something that takes what is provided by "Download your data" and produces a local SQLite database, a local webpage, local website or some combination thereof that is served from the user's computer instead of Meta servers.
However I do not use Facebook enough to justify the effort, and when I do I never look at the "feed".
We don't let anyone find you on the site without your short secret code which they need to ask you for. The code can be changed anytime. You (the user) need to actively ask your friends' code to build up the network. This also keeps the network small since you won't go out of your way to ask someone their code unless you really know them.
A really private place with only people that matter.
Perhaps it already exists but I have thought about writing something that takes what is provided by "Download your data" and produces a local SQLite database, a local webpage, local website or some combination thereof that is served from the user's computer instead of Meta servers.
However I do not use Facebook enough to justify the effort, and when I do I never look at the "feed".