I agree with almost everything you said, except I wouldn't advocate for people including stretching as a regular part of exercise. Despite what people tend to think, there isn't really evidence to support broad general benefits of stretching. Obviously, if you are a gymnast or another type of athlete with specific needs for range of motion beyond what is "normal", go for it. It may not hurt, but it is likely a waste of time, and if you are constrained in the amount of time you can spend on exercise, you should spend that time doing things with well established benefits, like weightlifting.

The other thing I want to add on (again cause I agree with what you said) to the diet part is that people probably shouldn't trust products like Athletic Greens to "count" as their daily vegetables, despite their marketing. I haven't been able to find good research on it that wasn't funded by them. Also, just more generally, I'm skeptical of the purported benefits of juice and smoothies. Again, it's hard to find good studies on it, but much of the benefit of fruit and veggies is in the fiber and resulting delayed digestion, so it stands to reason that the processing removes some of the benefit.