Maybe because Wonder Woman as a franchisee was very exclusionary. Only women, very little to no POC... definitely needed a change up. It’s obviously here to stay now so complaining won’t change much.
I just don’t get how Wonder Woman fans complain about any male inclusion in her mythos (from villains, to support cast...etc) while Bat/Super/Flash/Lantern/Aqua fans more than welcome females into the mythos.