If you turn off the sound, most film suck and don't have their message passed across.
Of course you don't have to show what you show, but then you make an entire different movie. The fact you could make a different movie, does not make a thing "morally" bad or wrong.
The public swimming-pool of you city is probably much more exciting for pedophile than this movie. Do you suggest swimming-pool are child porn ? Should we close it ?
Because there are people who will watch oversexualized stuff like this with the sound off for their own purposes.
You don't have to do the thing you are being critical of in order to be critical of it.
There is nothing sophisticated in "pushing boundaries" to make a point - it's sophistry to justify child pron, plain and simple.