Hummm, I suppose much like this asset pack unity have fallen behinde a bit.
Especially sins unreal engine's new visual scripting, along with some key new features.
However, unity still have the upper hand wen it comes to low performance PCs. Especially 2d games. Unreal engine needs a LOT of tweaks in order to run properly on older systems unfortunately.
But to keep with the times, I'm currently working on a new pack with better modals and animations for both unity and unreal engine.
I don't think unity is dead yet, they still have a few tricks up there sleeves =P
Guess only time will tell