Oddball poser 

Someone who starts posing as an oddball or a weirdo once the stigma is gone and there's no social consequence. The kind of people who wouldn't smoke pot or do any drugs that would make them look like junkies until there was no stigma and everybody did it.

The oddball poser found a sense of comradery with a group of other oddball posers once there were no more odd people left, and phasing them out was complete.

Oddball poser by Solid Mantis May 1, 2020