But that is just it, if we didn't pay attention to all the details, tuned bow/arrow/FOC etc. then if our grip pressure is off or the sight bubble is off then we will miss if the rest of our form is good.

Do the same test that you just did but untune your bow or untune your arrow or untune both and then do the same test and see if the results are the same. Having your equipment tuned correctly makes it more forgiving of form errors. If your equipment is not tuned correctly then you cannot get away with bad bubbles/grip/etc. IMO