A malicious law enformement officer or a criminal can exploit copyright laws to prevent criminal activities to be posted on mainstream platforms. Read the article for a real life example.
No matter your stance on copyright laws, I think we can all agree there needs to be an exemption to copyright laws where if a video or audio recording contains copyrighted material but also contains unrelated content (like police violence or other criminal activity), then that should be exempt from copyright laws. Beside, who wants to listen to music that also has a cop screeching in the background, therefore, this wouldn’t affect music subscriptions services in any way.
Even with such law, I don’t have hopes of youtube changing their policies. I’m honestly sad for the future.
Would a noise cancelled recording trigger copyright takedown, treating the song (copyright media) as noise?
You could, but then you risk the “court of public opinion” deciding that your video is faked or something. Especially in the age of deepfakes. Uploading the original, unedited video is the best.