It's not a straw man to say that Apple is scanning for CSAM because they don't want CSAM. It may be naive or wrong, but it's not a "straw man". The stated reas

It's not a straw man to say that Apple is scanning for CSAM because they don't want CSAM. It may be naive or wrong, but it's not a "straw man". The stated reason they do it this way is to protect privacy. Presumably a lot more people would complain if they scanned the camera feed.