This might be true for big companies. If you are small you can very easily end up with all men with no bias at all because there are more men than women in the

This might be true for big companies. If you are small you can very easily end up with all men with no bias at all because there are more men than women in the tech labor pool. A 5 or 10 person company with all men is easily chance. A 100 person company with all men is probably either intentionally discriminating or doing something that really turns off female applicants.