I authentically believe that when I'm angry, I should avoid talking to people in that state, because the me who's seeing things through anger is not a more authentic me than a drunk me would. That said, if you're a liar and conceal that? Yeah worse than being one all the time.

Authenticity can be good, bad, mixed bag, if someone is in reality a liar and decide to be so? Authentically hope they keep themselves away from me.

What is ones "authentic" self is an illusion. Playing loud crap music on the public transport is not "my authentic self", it is an impulse that I should perhaps just suppress instead.

Referring to an "autentic self" does not excuse all kinds of behavior. There exists expressions of some kind of authentic self, sure, but so many things people do are just carelessness or disregard and not actually important to who they are.

In this paradigm you describe, should we then strive to be authentic or should we refrain?

Don't you think this would open the doors to an endless amount of bad behaviours?