I’ve expressed this sentiment before as part of things and I just repeated it but I’ve never put it by itself as a post:

99.9% of people who call you out or challenge you on something you’ve said or an opinion you hold are not out to get you. They are assuming that you are a good person who has inadvertently hurt someone, and, as a good person would like to you would like to stop hurting someone else – that’s what makes it worth someone’s time and energy to stop and talk to you that assumption that you are a good person.

There’s going to be things that you’ll feel stupid you didn’t figure out or put together yourself, sure. But, all in all not knowing something and hurting someone accidently does not say a lot about you as a person (positive or negative)

What you do in response to someone pointing it out does. If you double down on what you said or just carry on doing the thing someone’s told you harms people…that’s not great – maybe you are disproving the premise that you’re a good person. On the other hand, taking the discussion of your actions on board; learning; apologising; attempting to mitigate any damage you’ve caused if possible or at least not causing the same damage again in the future that all says very good things about you as a person. 

The person who pointed this out to you is trying to make the world better it’s nice if you join them.