OK, I gotta say it.
This is in no way hurting the radio or the antenna. It's purely cosmetic. We're joking with you.
Our radios at work have antennas that look way worse than that. Unless there is bare metal showing, I let it go. If I didn't, I'd go broke replacing antennas.
If it's a concern, heat shrink tubing over the antenna is a good solution.
Or, if the cosmetics of it bother you, request a new antenna for the radio. But they might tell you no.