As a native English speaker, it also breaks my reading of "cooperate". Never seen it before. I think parent is just annoyingly eccentric for the sake of it.

I admit that latter part is just for whimsy, because I think it looks fun. The dashes I like for their aesthetics and if that makes me eccentric then so be it. They shouldn't distract anyone's reading, or at least they didn't use to before LLMs.

Most commonly seen in naïve, and the New Yorker