Using AI to flag footage for review by a person seems like a good time-saving practice. I would bet that without some kind of automation like this, a lot of footage would just go unreviewed. This is far better than waiting for someone to lodge a complaint first, since you could conceivably identify problem behaviors and fix them before someone gets hurt.
The use of AI-based solutions to examine body-cam footage, however, is getting pushback from police unions pressuring the departments not to make the findings public to save potentially problematic officers.
According to this, the unions are against this because they want to shield bad-behaving officers. That tells me the AI review is working!