> The false binary of "rest OR work" is dissolving

Sounds like someone hasn't yet worked multiple years with software engineering, or any job for that matter.

Your mind might trick you into believing it won't matter, but your body and mind NEEDS to be disconnected from work, 100%, at some point during your regular rhythms of life, otherwise you'll burn out much faster than the people you seemingly are trying to compete with.

Life never been a sprint, but it is a marathon, and if you spend all your young experience-less years on treating it as a sprint, you won't have any energy left for completing the marathon.

Take care of yourself, your mind and your body.