I mean Unity has broadcasted this changes months ago. 5 months at this point: ECS Development Status - December 2025
6.4 has only just hit supported. 6.5 leaving Beta is still a while away. This is the point at which asset devs should be updating to the new API before 6.5 leaves Beta.
This is a locked and loaded breaking change that isn’t going to not happen. There’s already been plenty of time to make the change, and there still is plenty of time to do it.
If by the time 6.5 releases proper and an asset dev hasn’t made the change, I don’t think it’s Unity’s fault at that point.