I agree it would be good to share video if possible, but Waymo cannot realistically expect that there will never be an accident where they look bad.
There are 43,000 US road deaths per year. If all driving was autonomous, even if autonomous driving was 100x safer than humans, that would still be 430 deaths per year.
And some of those accidents will be failures that a human would not make (sensor failure, bad software update, edge cases).
What you _can't_ do is what Cruise did and hide evidence from the public and regulators fearing that the truth would impact your business.