Well, you have to remember that this statement is the opinion of one anonymous employee. Some of the other more blatant racial statements are much more worrying.
A lawsuit would be nice to confirm that 1. This is not legal, then 2. Confirm that it's the role of GitHub to get rid of such employees, 3. Have it happen regularly at GitHub for both racist and revert-racist attitudes, until clean, 4. and in the IT sector in general.
