And the response clearly stated that letting your dislike of X outweigh the clear and evidence-supported benefits of vaccines is an emotional response that incr

And the response clearly stated that letting your dislike of X outweigh the clear and evidence-supported benefits of vaccines is an emotional response that increases the risks of bad outcomes for children and not something that others need to be sympathetic to. It certainly wasn't showing you respect but it wasn't toxic, and your response is simply a refusal to engage with someone who says you are wrong disguised as a complaint about not wanting to argue, and a nice ironic little endnote implying that feeling emotions is bad and should not be allowed to interrupt the nice conversations here. You don't have to engage, and in fact I can't imagine any rational way for you to do so. But you can simply not respond rather than turn the conversation into an attack on the other person.