The first one where the police uploaded videos and wanted viewer information is absolutely egregious and makes me wonder how a court could authorize that.
The next one, which I didn’t fully understand, but appeared to be in response to a swatting incident where the culprit is believed to have watched a specific camera livestream and the police provided a lot of narrowing details (time period, certain other characteristics, etc) appears far more legitimate.
They asked for information about a video watched 30k times. Supposing every person watched that video 10 times AND supposing the target was one of the viewers (it really isn't clear that this is true), that's 2999 people who have had their rights violated to search for one. I believe Blackstone has something to say about this[0]. Literally 30x Blackstone's ratio, who heavily influenced the founding fathers.
I don't think any of this appears legitimate.
Edit: Ops [0] https://en.wikipedia.org/wiki/Blackstone%27s_ratio
So not sure where you got the impression he's okay with up to 100 people being disturbed so we can catch one bad guy.
But then, he wasn't really talking about that was he? Better the guilty go free than the innocent suffer what? He was, essentially, talking about the principle of innocent until proven guilty; that innocent people shouldn't suffer by being punished for a crime unjustly.
2999 innocent people, in your formulation, though, are not being punished for a crime. They're not even being accused of a crime.
Other commentators have echoed the principle. Benjamin Franklin stated it as: "it is better 100 guilty Persons should escape than that one innocent Person should suffer"