It's possible to create custom Friends groups on Facistbook. I created a group called "Political" and add my like-minded Friends to it.
Click on the Friend's name, then in the box where it says Friend, click on it, you will get a drop-down, click Edit Friend List and check on the group you want to add them to. Then when you post click the drop-down for Audience and select which group you want to see it. Not that I want to be in an echo chamber and I don't mind pissing off Liberals but I just don't have time to argue with people all day.
One of the default groups they give you is Acquaintances and I put people I don't know that well or interact with very much in that group and my default setting for posts is Friends except Acquaintances.
So basically not everyone sees everything I post, except for Supe, Coryea, and DBS.
It sounds more complicated than it is.