[praptak]

Talking to cops is a bad idea. I'd only do that if I had to and even then I'd minimize the exposure: https://medium.com/human-parts/good-samaritan-backfire-9f53e...

Also, the abuse already happened, you are only stopping the dumber CP collectors from sharing images of it.

[DasIch]

That abuse has already happened sure but it will probably continue. You want to follow any trace you can find to suppliers. Shutting down demand might also help in eliminating any economic incentives that might exist on the supply side.