> If facebook only shows content you agree with, it's creating social bubbles where everyone is cheering each other on and criticism is not allowed, and you end up with anti-vax groups.
Just because the solution would be hard or complex doesn't mean FB gets to continue its problematic behaviour.
> Facebook is a tool, use it as such
It is not. It is a corporation and you definitely don't get to use it like a tool.
At its most charitable, it is a tool like a beehive is a tool to make honey. Which are less dangerous than Facebook and still require protective gear to operate.