I think you're right that the UCSF public relations team is doing neither hard hitting investigative journalism nor the sort of critical pre-Phase 1 analysis that prevents wasted effort in medical device development.

I enjoyed hearing about this new approach to infection control that is its infancy regardless. I felt a little hope for a creative solution to our current crisis and I didn't have to wade through the literature on camelid antibodies to do it.

New technology has always relied on a certain underlying optimism that you can do something that's new and better against the odds (since most fail).

Would you like this better if there was a disclaimer explaining in vitro/in vivo or just the long road from basic research to wide spread deployment?

The Statnews article I linked is a good example of reporting for this kind of very early result. It does clearly mention that this is at an early stage and that no clinical data has been collected yet. I think this is certainly interesting, it's just so tiring to see this kind of stuff turn up again and again in extremely misleading articles in mainstream media.

Though I think it would have been better to wait until peer review before making a press release. This is not a paper that has immediate clinical applications, and the peer review might still turn up some problems with the paper.