If you are limiting your statement to people you personally know, then it’s not responding to the statement in the image, so why would we assume that was your intended interpretation? If you are stating that you can imagine a person like I described exists, but no real person could possibly match that description, you are talking nonsense. If you are merely stating your personal ignorance of other people, then congratulations, weird flex but educate yourself.

Since you don’t know, it would be bothersome to normal people if someone says something about the world (as they interpret that statement, as mentioned) that is untrue, or if they perceive someone to be making efforts to detract from good-faith conversation. Perhaps that alleviates your uncertainty about the reason.