“So if someone points out the error in your thinking or offers any conflicting facts, they’re being “thin skinned”?”
No, if someone gets hysterical at a joke, has a meandering post about scientists (which said someone is undoubtedly merely a hobbyist and not curing cancer with his snakes) and offers irrelevant facts, they are being thin-skinned.
Also, look up “passive aggressive.”
A passive aggressive response would be “Why, bless your heart, you love snakes as pets.”
Google is your friend.