Unfortunately, few sites proactively fight spam and take measures against scammers. Most don't bother to have such standards because they aren't willing to put in the effort to implement the features.
We used to remove addresses in the old forum software for a long time. We switched over in January to this software --- adding it to this software has been on our "to-do" list since then.
Users can contact you through the contact form, sending you their email address privately that way, and visa versa. This is site policy.