Yeah, it’s not really fair to call that “fake” volumetrics since the shadowing technique is actually a true volumetric effect. There are assets on the Unity asset store that add similar functionality, but it’s not as well integrated into the rest of the lighting systems.
Unity’s lighting system by default is also not great for handling multiple lights on transparent objects with out some tricks. There’s one asset on the store that does some nice stuff to try and fake volumetric lighting on particles to a degree, as well as support dynamic lighting.
Curiously the author of that asset started down the road of implementing something like the shadowing technique Unreal uses before eventually abandoning it.