I mean, it's not really a fan thing. It's a soft reboot. I honestly don't think it's disputable, and it's weird to me that people seem to want to argue it's not. I guess people have come to associate all reboots with hard reboots with new cast, actors, etc., but there's different forms of rebooting canon and not all them involve throwing everything out and starting from scratch. Comic readers (especially DC readers) are probably more used to this type of reboot so it makes more sense to them maybe.