Kind of an odd place to draw a line. "That's ridiculous" is pretty clearly simply a strong way of disagreeing with an idea, not literally an attempt to "shame"

Kind of an odd place to draw a line. "That's ridiculous" is pretty clearly simply a strong way of disagreeing with an idea, not literally an attempt to "shame" someone for suggesting it. But once you're already irritated with the style of discourse here, it's pretty easy to just say screw it, that's the end.