To be fair social media has changed everything now
All the celebs are seen everyday and they're all accessible so it's misconstrues perceptions on who's popular.
These days anyone can be famous and popular, doesn't mean their on the same tier as a Angelina Jolie, Brad Pitt, Will Smith ect
There are IG thots with more followers then celebs, doesn't make them A-list superstars too

There's a clear cut definitions of WHAT an A list star is, and Chris Brown doesn't fit.