An actor isn't employed by the state to uphold laws. They should be boasting to upload it to YT, to show they've done nothing wrong. The adage turned around "well if you've got nothing to hide", seems to fit.

Sure the video could still be held as legal evidence, but the uproar required to get the attention to get it there will not be possible.

People aren't upset police are doing this because it's infringing on their right to record, it's infringing on their limited ability to hold them accountable.