> The detectors themselves introduce the quantisation.
Which, if you are going to take this position, applies just as much to neutrons as to photons. The only evidence we have for either of those being "particles" is such detections. So either you should withdraw your claim that neutrons are particles, or you should admit that photons are. You can't pick and choose.
So neutrons aren't countable ? one detects them (for counting purposes) with the combination of nuclear forces and EM anyway.
Don't get me wrong I am probably missing the point of the discussion.
If you think you can disentangle the QM properties of the detector from the QM properties of the thing being detected, please write a paper explaining how and collect your well-deserved Nobel prize.