Exactly. People just spout nonsense without taking into consideration that somaone might actually have something other than stone stock interference fit junk on their engine.
I wanna see someone adjust valves on a running engine with FREE turning screw adjusters and locknuts with either screwdriver slots or female hex adjusters. Although I have the interference fit stock adjusters on Vixen's engine, I left them because they were in good shape, plus, the lift on the cam is only .465". Even though the duration is 250 @ .050" and it's pretty rowdy, it has low spring pressure and low lift, so not a lot going on there. But I still adjust engine cold and not running.
Now, the engine I have on the stand is another matter. It will have the factory closed chamber head and I have a nice set of Crane adjusters and lock nuts on that head.
People can adjust however they want. I know how I will continue to do it. I also don't use any EOIC, ABC, XYZ, or LBGTQ adjustment method. I get each ONE on the base circle, make the adjustment and move to the next. To me, there's much less room for error. You are concentrating on ONE rocker and valve at the time. I've seen people ***** about it taking too long and I just chuckle.