Why? - It's the private life of private citizens that should remain private if they wish.
Even better to allow you conspiracy nut-jobs to implicate yourselves as such. Then have the option to smash the fact pie in your face if politically necessary later.
Then they should have said so in the beginning: "My husband was injured as a part of our private lives that we wish to remain private. We will avoid answering any questions about what happened, and we have asked police to do the same."
If the police complied, that would be some Democrat Privilege because San Fran police release body cam footage in other cases. I know if I had a gay prostitute in my house who hit me on the head with a hammer, I wouldn't want anyone to know about it. But I don't have Democrat Privilege, so it would make the news, me being a teacher who is expected to avoid contributing to the human trafficking industry.
But police would have done it for the Pelosi family if that was the plan.
Point is that Nancy did not try to keep it private, she tried to make it another anti-Trump scam, by bizarrely claiming that the Canadian illegal immigrant, nudist activist, crack-head must logically be a Trumper.
Her allies in the media altered the story on the fly to make it fit that crazy narrative, and even took adverse action against a reporter who reported the truth on the first day. That was very unfair. He did not become an NBC reporter without being willing to lie, but he reported the truth before they told him the official story.
That narrative attacks me and every other Trump supporter as people reponsible for an attack on a very innocent and very heterosexual, happily married older man. Having been dragged into a disgusting story like that, we have a right for the truth to come out.