Right intentions, but rather awful execution.
I'll start off by saying I do believe the intentions of the filmmakers were positive. There are undoubtedly minors being exposed to similar themes to that of the film, so it's imperative that people - particularly parents - are made aware of this.
With that said, 'Cuties' goes about it in entirely the wrong way. The message, which does become clear at the end, is to stop the exploitation of children - yet here they are doing just that. There are scenes and/or camera angles that simply should not have been filmed and shown. There is no need for certain shots.
More should've been left for the viewer to work out, as opposed to shoving it into our faces and therefore practically doing what they are criticising. For example, they could've zoomed away at particular points or got an extreme close up of the characters' eyes when they were doing sexualised things.
For what it's worth, I will say I respect the performance of lead Fathia Youssouf (Amy) - I felt a fair amount of emotion from her at certain points. None of the other cast members stick out in my memory, though none produce anything negative.
I've spent a long time thinking about how I was going to word my review, much longer than I usually would at least. It's slightly tricky as, as mentioned, I do believe it intended to do the right thing. Unfortunately though, it ends up - in my eyes - doing what it's trying to say is bad.
There are some extreme thoughts on this film, not all of which are right in my opinion. However, as said, it isn't a good watch - even if only judging on film merits.