What people think is completely subjective, if you feel offended just report.

I'd laugh it off but if I could choose to have a sporty adversary instead of an imbecile I'd choose that over anything else so by reporting them I feel like you could be pushing a better community environment which in the end will make a better game.

I don't know how to report in come PVP content though as you can't see the names.

Asking to remove a whole emote is not the solution, there will be other emotes or action to use in its place.