Hey – hope you see this, wasn't sure another way to reach out. You left a comment ~10 years ago on an HN post about a breathing exercise. I discovered it, tried it, and since used breathing exercises to regulate an otherwise problematic amount of stress.
I think the problem with those is that they lack understanding author mentions:
> But it’s really important that one person on the project has an end-to-end understanding of the whole thing: how it hangs together technically, and what product or business purpose it serves.
The reason people hate specialized roles of scrum masters/delivery leads is that they often lack the E2E understanding and therefor are inadequate owners.