You seem unfamiliar with the power of litigation. The case won't be about "him being fired", but about showing there is any pattern for bias in Google with respects to the three stated criteria. And if they can show that bias exists, then still without making this about him, specifically, the court can be asked to apply punitive measures against google (which their client "happens to benefit from, being part of the group that Google has demonstrated bias against").

Initial filing for a court case is crucial for establishing what we're actually sueing over, and this will be an interesting one, because the chances of his legal team winning this one are definitely non-zero.