Doesn’t need to be 100% bullet proof to be highly effective at suppressing accountability though. Yes people will be able to get around it but the benefit of everyone having a phone is that it’s ubiquitous. Everyone has a phone so if there’s anyone in the vicinity of police committing a crime it can be recorded. With all those extra steps you listed, the number of people who will go through the trouble will be a small fraction of the current phone user base now.