Shooting time is limited to 30 mins. The card/camera will be fairly warm by then, but not problematically so. It’s the memory card that gets warm.
The Go-Pro is a point-and-shoot, not requiring any input. The Canon will need setting up and probably monitoring. The AF, if it even works in video mode, will be slow and a bit erratic, so you’ll get better results (eventually) using manual focus – that’ll take time to learn. You’ll also need some ND filters for shooting outdoors.
I would expect the overall quality of the Canon to be better, mostly due to the aesthetics of a ‘proper’ lens and the larger sensor. It will likely have a depth of field and more natural colours. Check out YouTube for video examples of each.