It sounds important to me. Humans are where context comes from. Humans do not generally provide 100% relevant context but are generally pretty good at identifying irrelevant context that they've been given.

It seems to me that solving this problem is one approach to removing the need for "prompt engineering" and creating models that can better interpret prompts from people.

Remember that what they're trying to create here isn't a graphing calculator - they want something conversationally indistinguishable from a human.