[Mana]

"Nobody reported me and I stayed for an entire map change."

We all (you included) know full well that you can't pull this as an argument because the game does not have a hand-held assisting system that goes "oh hey you were damaged by an inno, do you want to make a report?". Judging from the timespan this all happened as well, it seems you were whacking multiple people possibly huddled in a crowd or group, so there is no way for people to tell that it is you who was hitting them specifically.

Maybe one or two people there might have been your friends, but you went and hit multiple people who may or may not have been familiar with you enough to appreciate the joke you had in mind.