13 Reasons Why is considered a shoe-in for a second season, and that would certainly tie Butler up and make a return to Riverdale unlikely.
The decision to recast Reggie also makes sense if the series really does want to give us even more of the character in Season 2.
The show has received great reviews from critics and audiences alike, with the subject matter and casting getting praise.
As Aguirre-Sacasa noted in his interview, Butler, apparently, can’t return to the role at all next season, so those behind the show really had no choice but to replace him.