"Facebook is a social media company. It provides a service where people are free to exchange whatever the fuck they want."
No, it isn't, and no, it doesn't.
Fakebook is a covert government surveillance agency.
It is highly censored, and you can only share what is allowed.
That some people are vulnerable to manipulation is a fact. There is a biological imperative to be part of a social group, and carefully researched and designed protocols are applied by Fakebook to manipulate people.
Fakebook sucks, and it can't die soon enough.