Anyone remember this new China Hong Kong secuirty law that was brought in in 2020?
A simple guide to the national security law China has passed in Hong Kong and why it matters.
www.bbc.co.uk
If China was to decide that certain images, texts, documents and videos broke that law, China could get the hash values of what it wanted banned to be added to Apples scanning system. What is Apple going to do, say no? I doubt it and this is the problem that critics of the system are trying to point out, will Apple comply to the wishes/demands of governments when they request certain images, documents and videos are scanned to comply with the countries law.
Also, what about the Charlie Hebdo shootings
en.wikipedia.org
The images the newspaper produced are illegal in Islamic countries because it breaches Blasphemy and Morality laws. Therefore could Islamic governments get Apple to comply with their laws and thus have their system flag up the images that appeared in the newspaper and report them to law enforement.