What are you talking about? You're going to kill yourself if you don't take breaks throughout the day. If this is a new concept to you, you're cruising for a bruising.
Edit to add: Whether I'm at an office or at home, I go on at least one 20 to 30 minute walk and ideally two or three each day. I've been doing that for over a decade. I have no qualms saying that in public. Any employer or manager who sees this as a negative habit because I'm doing it while I'm "on the clock" is not one I have any interest in working for, and I'm very happy if they'll filter themselves out of my set of prospective employers.
If you do computer work, it's important to move your legs and extend your gaze into the distance, often. What you're advocating here and are "startled" that it's "controversial" is just strictly unhealthy. Don't kill yourself for a job. There are many many employers who won't require it of you, because they know that happy healthy employees are more creative and more productive than unhealthy burned out zombies.
I naturally took breaks when I worked from home, at the same rate I do when I work in the office. I don't cook meals for the family or do other errands when working. If there's a home emergency requiring me in a WFH situation I'd work the time owed afterwards. 24 years in the workforce, thanks for the concern but think I'll manage.
I really don't get it, what exactly do you think is the difference between doing laundry or cooking a meal when you take a break vs anything else you might do on a break?
