Of course it's not an attempt. Wanna exit offered her opinion, unsolicited, to tell the entire group what to do. In response she got an answer. She didn't like the answer, she was given free and accurate advice on how to avoid not liking the consequence of her actions.How Vivianesque of you.
As far as what "getting used" to things, I am used to people making unfounded and wrong assumptions, like whether or not I am annoyed. You've done nothing more than be utterly ordinary in not knowing what you don't know and thinking you do
wannaexit shared an opinion. You did too. One's no more an attempt to "have authority" than the other. Both are completely normal and acceptable.