Wearing the copper membership is optional. You can choose to not wear the copper membership at any time. So, someone who has bought copper membership and now is a legendary member, has the choice to not wear the copper membership and be shown as a legendary member.
Just adding information; User can't found that option on profile setting.
Only this link https://bitcointalk.org/index.php?action=credit;promote to choose wear Copper or Do not wear a paid membership.
if already purchased, a page will come like a image above. if don't, page to be like this:
