They're not saying it's ok. They are saying that the overall system (the business-business-management-employee complex) prevents optimization of this UI from being a priority.

>"I'm at work for 8 hours a day so it's ok if some time is wasted, there's plenty of it!"

that is how enterprise employers treat their employees. The time is wasted everywhere. Slow Google UI is just a one item in the long list, so no one of those enterprise customers would give Google a headache over it.