This has been happening for a while. Elle Fanning was up for the role of Jean Grey in Apocalypse and Dark Phoenix but lost it to Sophie Turner because she didn't have enough Instagram followers.

Elle Fanning Says She Lost Out On A Major Role Because She Didn't Have Enough Instagram Followers - Looper
Elle Fanning said she lost a pretty big role for an absolutely bizarre reason.

"I didn't get a part once for something big because – it might not have just been this reason, but this was the feedback that I heard – was because I didn't have enough Instagram followers at the time," Fanning told Horowitz.