That's a very real path to "You have a photo of your child in the bathtub and the police smash down your door."
There's also the simple fact that the reporting of CSAM involves someone seeing CSAM. You see it and then you report it so it gets removed. Does the copy in your browser cache incriminate you? I can also imagine someone deciding they need to save it to forward to the police, whether or not that's useful.
There's also the simple fact that the reporting of CSAM involves someone seeing CSAM. You see it and then you report it so it gets removed. Does the copy in your browser cache incriminate you? I can also imagine someone deciding they need to save it to forward to the police, whether or not that's useful.