Earlier quoted context omitted.
The irony is the CSAM measures they were doing may have enabled them to encrypt the iCloud iMessage backups since they’d still be able to help the feds with CSAM. Instead everything remains unencrypted.
You can use another messaging app that supports encryption. Some of us don’t want your laziness resulting in local scanners on devices that we have paid for.
There’s functionally no difference, except one offers a future path to encryption on iCloud servers.
If this was about on device scanning without iCloud backup enabled then I’d agree with you, but it’s not.