The moment you get defensive, take insults personally or react badly to criticism you’ve lost the chance of building a positive relationship with that member (and other members who see your response).
Every interaction is a great opportunity to build a stronger relationship, deepen mutual understanding, and find better solutions to community problems.
You shut down those possibilities when you try to defend your own reputation instead of making the other member feel great.
Defensive responses are selfish responses.
The great irony is the best way to improve your reputation is to ignore the personal insults against you and focus on helping other members solve their problems, feel understood, and more appreciated.