Are K-Pop Stans the same as K-Pop Fans, but with the Stan connotation from the Eminem song?[1]

This is the first I've ever heard the term, the author of the article doesn't attempt to define it at all, and I'm wondering if it's a name that the fans (stans) chose or was given to them because of their zeal... because that is quite the negative connotation.

[1] https://en.wikipedia.org/wiki/Stan_(song)