Sometimes he pretends like he is taking photos or making videos. He also chases our dog as if he is recording him. He probably learned that from us as that's how we use it. Sometimes, he may use camera as a toy car or a block.

The button is too hard for him to push but that's where voice commands come in. I can say "GoPro take a photo" while he is holding it. We have captured some fun shots like this.

Ah ok, that's what I was expecting. I'd be surprised if a 2yo could consciously take photos.

I remember arguing with someone here a few years ago talking about "intuitive" interfaces and arguing that his 3-6 month old "understood the iPad".

No.