There are positive physical and mental change that happen with more intensive cardio and with resistance training that you can't get from walking no matter how much you walk. And there's nothing herculian about those modes of exercise.
This is true, but it doesn't matter if people don't do it.
The danger of hyper-optimization is people just giving up altogether. That's why a lot of those intense diets don't work.
Does Keto work? Yes. But does it actually? No. Because being on Keto is very, very hard and people just give up. The vast majority of people who start Keto will not stick to it.
But switching out soda for diet soda is easy. So, if I'm inclined to give suggestions, I'd rather suggest that.
Hyper-...? I don't think you get how optimized and hyper-optimized exercise can get.
I'm talking about the basics. For anyone who wants to get benefit from exercise. If you think you're getting those benefits in some other way, you're lying to yourself or you don't understand what we're talking about.
Okay, whatever, this is just bad advice for people who don't exercise. Giving advice isn't an opportunity to brag - take it down a notch. I'm sure you're very cool and everyone likes you.
But, for most Americans, they need to be walking. The rest can come later. Sorry superman.
I wouldn't like the takeaway from my comment to be that any extra intensity beyond daily walking is wasted. Instead my point is that for some, walking is one of the few exercises within reach that is sustainable with low injury risk.
I am also saying that for those new to the gym, starting with say 10-20 minutes every day is better in the long run than 1-1.5 hours three times a week before the body is acclimated or before proper form is developed. This lowers the risk of injury that could set back the health improvement endeavor.