I'd call it satire more than sarcasm, my primary target is the kind of argument that blames the victim. In this case, children cannot vote and therefore it is the adults' job to protect them. By allowing them to work these jobs, adult lawmakers are exploiting people who don't even get a say. It's self-evidently abhorrent. If you disagree, how do you even begin the conversation? It's like arguing with someone who thinks a plate of human shit is delicious - it's such an alien and disgusting position that it's almost impossible to engage with, except, perhaps, with satirical contempt. Which is what I did.

I'm not sure either. It's really hard to tell

It's probably sarcastic.

Probably.