Dunno what Sue Bird's deal is since she's not playing anymore, but for Diana Taurasi, Breanna Stewart, and any other active players who don't play for the Fever and aren't rolling out the red carpet for Caitlin, I think it's as simple as this:
Competition, man. They see this new, young threat coming in with all this buzz but who hasn't done anything in
their league yet and are getting ready to take it to her. It's easy for you and I as outside observers to feel that all of the other players should be publicly welcoming her with open arms, because a rising tide lifts all boats. However, as Lisa Leslie alludes to in this piece, Caitlin isn't a direct threat to our spots. As Elena Delle Donne said, she got the same competitive treatment from Diana specifically when she arrived on the scene. Like Elena, Caitlin's gonna have to stand up for herself and fight (metaphorically speaking) to earn Diana's and others' respect.
Caitlin obviously won't be the first professional sports super rookie to have gone through such an initiation, and she surely won't be the last.
Sue Bird, Elena Delle Donne, Nneka Ogwumike, Candace Parker and Lisa Leslie describe what Clark should expect from her peers during her rookie season.
www.espn.com