Nope, Apple's system was based on a list of KNOWN CSAM hashes, not some AI algorithm.
Also it mathematically required multiple local hits before anything would've been sent to Apple.
And even at that point an actual human would've checked the image(s) (reduced quality versions) before any action is taken.
So even if you would've managed to trigger the system multiple times on someone's phone with hash collisions that actually are pictures of kittens, the most you've done is slightly inconvenience a low-paid image checker in a cheap call center.
Also it mathematically required multiple local hits before anything would've been sent to Apple.
And even at that point an actual human would've checked the image(s) (reduced quality versions) before any action is taken.
So even if you would've managed to trigger the system multiple times on someone's phone with hash collisions that actually are pictures of kittens, the most you've done is slightly inconvenience a low-paid image checker in a cheap call center.