Generally police reports are very poor. Police don't want to write them. They are usually incredibly short, incredibly vague, and always written to fit the narrative the officer is trying to present.
What happens is that there is usually a substantial delay between arrest and trial, so the officer will have forgotten the incident by that point (he has had 1000 other crimes to tackle). Day of trial the prosecutor will call the police to their office in the morning and get them to read the report and "refresh" their memory. We know how human memory is.
On the one hand, writing a comprehensive report using bodycam footage might improve the quality and veracity of the reports, and potentially cut down on improper charges and improper convictions.
But, it will (a) make police totally lazy about reports, and (b) sometimes either hallucinate, or mischaracterize an interaction that an actual human would understand differently.
They definitely need to be flagged though.