What if it's an appropriately scoped take-home assignment? 1-2 hours max. I would say that's fair and gives people with interview anxiety more of a chance.
Such an overlooked aspect of this topic. Energy and the creation of physical resources are still major constraints. Intelligence on its own cannot magically manipulate reality to bootstrap its physical substrate.
Yes, actually. Everything is about getting work done. Delivering value. If you're spending more time playing with your tools vs. using your tools to deliver value, that's not success at your job. Play around on your own time.