If Damore wins, and he should, it will likely be on grounds that he was unjustly fired without cause and only because management was cowed by the dissent his writing caused, even though management encouraged the discussion in the first place.
The diversity issue he raised will resonate whether he wins his case or not. Google firing him assured that. I wouldn’t be surprised to see legislation tailored toward restraining Google in several ways as a result of their stupid decision to fire him. Not legislation directed at righting the wrong of firing him, but legislation aimed at the whole diversity charade.