Good for you OP because they vote kicked you, so you don't have to endure a torturous Dun run and you cam always re-queue because you have no penalty on you and I bet cha that they will soon regret it because a Healer is hard to come by compared to a DPS. So, by the time you get into your next Duns, they will still probably be waiting for another healer.

And as for the group, if the bard is such a scaredy cat for a low lv duns run with no protect, he will, as a matter of time, soon complain about how Tank can not hold aggro properly and the run is so slow, yada,yada and the group actually go through with that kick, soon you will find yourself in a situation in which you just want the run is over or vote-kick someone else. So by kicking you, they actually do yourself a favour. Leave it behind, and move to the next