I recently started to use Facebook to stay/get in touch with friends and family from previous lives. My rule when using it is that I only interract with person

I recently started to use Facebook to stay/get in touch with friends and family from previous lives. My rule when using it is that I only interract with personal photos/stories, or stuff posted publicly. I completely ignore postings that are not personal and to friend only (not public). Facebook has (or had?) huge potential for people to keep in touch but its bigger issue are private gardens where people can spin up opinions into silliness with no opportunity for anybody from outside their echo chamber to criticize and debunk.