These are fair points to consider. If I was still an ATCO I would have them right at the front of my thinking. When this happened the world, & aviation, was a lot simpler place. The essential point that I was trying to make was that in a very simple & non-critical situation, there was no need to rush off on reporting action. Everyone learnt from a friendly discussion, rather than being dragged over the coals. However, I do acknowledge the need to ascertain whether, or not, the a/c or crew have a problem; & to help to deal with it. In the case mentioned I was pretty certain that nothing was amiss - although, I do accept that I did not KNOW that to be a fact.
As I said, everyone learnt from it , & the points which have been made were part of that learning.