Yeah, that's why I'm not liking the fact they're just breaking continuity all willy nilly. They started this mess, they should fix it or stick to it. Just ignoring shit is the laziest and dumbest way to solve these problems. It literally makes the other movies pointless which is totally unfair. Which is why making The Batman have a drastically different actor will really piss me off. Like, if they want to recast Ben with a guy like John Hamm, then fine, at least he's age appropriate. You can't just have Batman be some 28 year old in this universe, it doesn't make any sense. Especially since they're continuing with Gal as Wonder Woman and Jason as Aquaman... They've straight up interacted with an older Batman and have had their stories influenced by him.
Ignoring it is fixing it. The alternative is spending $300m on a Flashpoint movie, which would be the height of absurdity.
There is a small share of the viewing audience who liked BvS and embraced Affleck as Batman. But most moviegoers didn't like the films and have no desire to see another film like that. Few will be sad if they don't see Affleck in the role again.
Reeves is an outstanding director and it'd be a shame if his vision was hamstrung because Synder was obsessed with recreating the horrible Dark Knight Returns comic rather than providing the groundwork for a successful cinematic universe. Reeves has the capacity to create a trilogy in the vein of the Nolan trilogy, which combined with the ongoing success of Wonder Woman would pave the way for a successful cinematic universe. But that requires an actor who can not only play the role today but also ten years from today. Affleck is not now, nor was he ever that guy, and it was the height of shortsightedness that he was cast in the first place.
I can understand why some people might be annoyed if they recast the role but doing so it ultimately in the best interest of the cinematic universe. Doubling down on what has already failed is not a winning strategy.