I'm not arguing either, I'm asking because I don't know.
Until a few weeks ago I'd never adjusted the valve lash on any car. I only used the EOIC method because that seemed to make sense and there was a few tutorials online how to do it.
Your method seems to be the same as what I followed. What I noticed with the overlap of my cam, when I'd finished one cylinder, the next in order (firing) had already moved some, so I needed to go rotate the engine back a touch to get that one where it needed to be.
Also, I found a video of a guy checking the valves on a poly with the engine running. I looked at that and thought "no way in hell am I trying that"
The base circle of a cam......any cam is a very wide area. That makes it easy to eyeball the pushrod side of the rocker and see when it is all the way down and on the base circle. It's just always worked for me. Yeah, I'd love to see someone adjust valves on a running early Hemi. Ain't happenin. Especially on one like mine that uses adjustable pushrods instead.