I think you are right on the first part. I don't view racism and sexism as exactly the same type of thing. Racism is just evil, and sexism is sometimes just ignorance (he hits on her and doesn't know it's not wanted). But, same ignorance could be argued for racism, even though I think it's different. I dont think uber wants or cares for my opinion, but if it's beyond the pale, in both case, fire on first offense. Else, one warning and then out.

Your second paragraph suggests an ideal that we should aspire to but it's not the reality for startups and high growth industries. If we seek out this part of this industry we shouldn't bellyache about the hours.