"I was just quoting someone else" is the classic cause for how misinformation/disinformation spreads on the internet.

I'm not saying you're wrong about him, I have no idea. But you're clearly amplifying and spreading the accusation. You have some responsibility to find out if it's true before doing so. Now that said, I don't want to let everyone else on here off the hook by blaming you. They also have a responsibility to take your statement with a grain of salt too. But we can only control our own behavior.

I'm not taking a position on whether we have free will or not. In fact I'm somewhat convinced that we don't ;-)