At no point has anyone ever suggested white male developers will find it harder to get jobs because of their colour or gender. Refusing to employ a white male developer because they worked at Uber is not racist or sexist. It's "Uberist", but that's no different to being "Googleist" or "IBMist". Hiring managers are allowed to think people who worked in those cultures might have learnt things that make them a bad hire. To be honest, that's the hiring manager's job.

I've said this on HN before - if you work for Uber and you're worried about it becoming toxic to your future career, speak up when you see the sort of behaviour other companies think make you a risky hire. You're perfectly placed to stop the problem.

Speak up wherever you work. This problem isn't limited to Uber.