I would be more sympathetic to Zenimax if they had shown any interest at all in VR. Remember Carmack left the company because he couldn't get any traction on VR, even after demoing goddamn DooM on it.
To show you just how much Zenimax cares, go and try to buy DooM VR for any platform.
Although this was the case when the lawsuit was filed, Zenimax has since promised more support for VR than many AAA game publishers, and they announced versions of Fallout 4 and DOOM for VR at their E3 press conference in 2016. Although you cannot buy Doom or Fallout VR now, they have shown both VR experiences (running on Vive at Gamescom and PAX), and are promising full VR support for Fallout 4 in the future.
To show you just how much Zenimax cares, go and try to buy DooM VR for any platform.