Apple's CSAM runs on your device... While it could also run in the Cloud, that's not what the presented implementation was going to do. At the same time, Googl

Apple's CSAM runs on your device... While it could also run in the Cloud, that's not what the presented implementation was going to do. At the same time, Google and Microsoft already have this CSAM in place, and when you run on GCP, AWS or Azure you are personally liable for CSAM so it's not like it suddenly goes away. Even with CMK and pre-transfer encryption you are still the one holding the CSAM bag. Unless you are willing the reinvent every wheel yourself, there is little to be gained from not using an ecosystem. You should of course always retain a personally controlled backup.