All of the operators I know do what they can to minimize interference issues with neighbors. Licensed operators are not the same people you might here trash talking on overpowered CBs. Operators are required to comply with FCC regulations regarding interference. If he refuses to address the issue notify the FCC. If he does not comply with their requests the FCC can suspend or revoke his "privileges". If he operates without a license he can be arrested and his equipment confiscated.