Comment by Bender

but what is the alternative

If an app can be installed on someones hardware without their intervention launch it into the air and use it for target practice. If a website requires some crypto-crap to verify objects were scanned then upload to smaller platforms and let others link to the objects from the big platform. The big platforms can play whack-a-mole removing links, it's a fun game. The smaller sites can give the crawler alternate images. Better yet just use small semi-private self hosted platforms. Even better yet ensure those platforms are only accessible via .onion domains requiring a browser that is Tor enabled. People can then make sites that proxy/cache objects from Tor onion sites to easier to access sites.