VR is very different from 3D cinema, at least in games. A 3D movie is 99.95% the same experience as the 2D version, but VR games are fundamentally different because both the visuals and far more importantly the inputs are in 3D. Many of the player interactions used in Boneworks and Half-Life Alyx are really awkward if not outright impossible in traditional pancake games: using both hands to do different things at the same time, throwing physics objects with specific force and direction or taking cover behind objects of arbitrary size and shape and so on.

Having these capabilities of course does not mean that VR games are automatically superior. In fact, the vast majority of VR games are kinda clunky compared to traditional PC and console games. But they enable fundamentally new interactions which are really interesting to experiment with, and shouldn't be discarded as just gimmicks.