"The internet makes us think we have to engage with crazy people. You see someone yelling 'vaccines cause autism!!' on Facebook and you write this diatribe about why they're wrong, and in arguing with them you give them legitimacy.
"If you saw someone shouting that nonsense in real life, you would cross the fucking street.
"Fuck the dislike button, we need a 'cross the street' button on Facebook. 'Oh, aunt Diane is posting about chem trails again? Aaaaand 50 people crossed the street on this post.'"
Steve Hofstetter (paraphrased)
I use the block button for anyone crazy. It works on all platforms I'm on except for steemit which only has a "mute."
That seems like a reasonable approach :)