The true test of whether someone's really anti-authoritarian is how they behave when they're in authority. 99% of people who use "question authority" as an excuse for what is really anti-social behavior fail this test.
And I think that really this percent is not 99%, not even 50%, closer to the single digits really. It's just that these anti-socials impact pro-social people much more that other pro-socials.
PS: pro-social is just an opposite for anti-social. Nothing complicated.
"authority" has an opinion on religion, good manners, social interaction, biodiversity, climate change, whales hunting, and every possible topic on earth.
People can choose to fight the authority at any level they want on any topic they want.
Two people can fight authority on different topics, both of them see each other as anti-social; but both of them are anti-authority.
"Choose your weapons, your enemy has been chosen long ago, even before you realized." -- anonymous
Simply incorrect, both etymologically and logically. Authority is hierarchical; society is peer to peer. Authority is hard power; society is soft. When you're anti-authoritarian you're defying hierarchy and force. When you're anti-social you're just being a jerk to your neighbors. Not the same thing at all.