Inaction argument is a strawman, I'm not arguing for doing nothing at all, I am just against informal prescription of rather potent, psychoactive exercises without due respect, especially in the form of "just try it, can't do any harm". If you want to get serious with it, find people/sangha/teachers/therapists who know their stuff and train in that context. But assuming no harm can come while assuming benefits can come is a contradiction and wishful thinking.
And people often harm themselves immensely through inaction in the same areas.
People also change their breathing patterns all the time, or don't, without knowing what they're doing or not doing.
You're advocating a line of thinking that simply is not how most people live their lives, and never will be, because it would paralyse us.
The problem with this line of thinking is to assume that inaction is not also a choice that affect you.