Yes, but I've had 4K monitors and 4K TV for almost as long as the Link has existed. It very quickly became useless to me the moment I upgraded to a 4K TV. The Steam controller is also an utterly horrible UX so the pair were just a waste of money that sat in a drawer until I stuck them on eBay.
A 4K Steam Link should have been an obvious iteration, and a controller with actual buttons and sticks (I half-joke about the controller, I know some love its touch nature, I just hated it, could never keep my thumbs in the right spot).