It aleady has been. Anything, anything publicly posted and available will be harvested by, at a minimum, Google spiders. The only privacy benefits of any site can only be promises that they won't share the information that you don't publicly list.

And even then,.all it takes is the feds raiding a dipshit Kolektiva admin to get that information illegally anyways.

Do not organize serious actions over social media. At most, hold sensitive discussions over private, E2E encrypted chats like Matrix.