Does this mean Facebook’s privacy model is going to change radically? [1] TikTok’s “for you” feed works because all posts are globally-visible, but on Facebook

Does this mean Facebook’s privacy model is going to change radically? [1] TikTok’s “for you” feed works because all posts are globally-visible, but on Facebook isn’t sharing generally limited to your social network? Will they change things so that every Facebook post is globally visible by default? [1] Or maybe it changed already. I haven’t used Facebook in a long time.