@kilpatds@mastodon.social @goof_ball_amir@kolektiva.social @crowgirl@hachyderm.io one difference (of many) between Facebook and the Fediverse is that Facebook have a real names policy. So, if you use a fediverse alias rather than your real name, then they cant just ask your instances server for your posts by name, as there aren't any on the Fediverse servers and there are lots of instances you could be on. If they have already taken your unencrypted device (phone , laptop), or they can associate your posts with you then of course they can.