A quick search found four clear cases where law enforcement has favored technological false positives over evidence:
Ousmane Bah: https://www.businessinsider.com/teen-sues-apple-1-billion-fa...
Robert Williams: https://www.cbsnews.com/news/facial-recognition-60-minutes-2...
Nijeer Parks: https://www.cnn.com/2021/04/29/tech/nijeer-parks-facial-reco...
Michael Oliver: https://www.dailydot.com/debug/detroit-facial-recognition-wr...
The one on Ousmane Bah really frustrates me- not only was he on a date at prom during the theft, he was in another state! "Nothing to hide" does not mean "nothing to fear" and allegations (even false ones) of possessing CSAM will ruin lives.
At the end of the day, what it really comes down to is trust; personally, I do not have enough faith in due process to not ruin innocent people. But I'm just some guy online, I will readily admit I don't know anything about anything.