people who have liked and/or followed our page no longer receives notification
It's not that they were banned.
It’s called shadow banning.
You think you’re rolling along, pinging all of your followers, but FB or Twitter has actually blocked your posts from going out.
A coworker of mine did a test. Set up two twitter accounts and would post on each, to each and to others. Her more pro-Trump account wasn’t pinging/posting. Her more generic account was cruising along just fine.