Australia has already moved to make legislation [0] that is basically an expanded version of it, with incredibly vague terms ("material... may be harmful"). Weaponising it has already begun.
I mean, Australia has been putting forward insane tech bills to outlaw E2EE and demand backdoors for everything for years now. I don't think they're doing this because of the Apple news.
Makes you wonder if this is a case of the creator getting ideas from the uproar about Apple's CSAM implementation. Or, optimistically viewed, perhaps someone trying to prove just how slippery the slow is?
[0] https://www.zdnet.com/article/canberra-asks-big-tech-to-intr...