The Backstreet Boys / N Sync stans, thankfully.
Same for Ashley Tisdale and Ashlee Simpson.

no

I don't know one person IRL that uses or even talks about her. The only place I notice or see much about her at all is on this forum. I can't name a song of hers that isn't years old. Yeah -- completely off the radar.

Basically the people that don't make music anymore or were nothing but one hit wonders. Fergie, Gwen, they don't have stans right now because there's nothing to stan for in terms of solo material. Although to be fair if they came back they would definitely start getting stans again. There's also not a lot of Michelle Branch, Nelly Furtado, Ashlee and Jessica Simpson stans, just some people here and there that casually listen to them.

How are barbz extinct?

Alicia Keys stans. I've never even seen more than 2.

I am both shocked and offended.