"isn’t listening to patients perceptions of causation more likely to provide insights rather than looking down a microscope?"
The answer is clearly "no". The microscope provides quantitative data, while questionnaires provide qualitative opinions/beliefs.
"Qualitative research, on the other hand, collects non-numerical data such as words, images, and sounds. The focus is on exploring subjective experiences, opinions, and attitudes, often through observation and interviews.
Quantitative data is information about quantities, and therefore numbers, and qualitative data is descriptive, and regards phenomenon which can be observed but not measured, such as language."
What comes to my mind is how in the 70's (?) educators tried to replace actually teaching a subject with some "touchy-feely, new-age self-directed" philosophy. Is there any quantitative data on how well students under that philosophy learned math, language skills, etc, vs the traditional methods?
"Interest in qualitative data came about as the result of the dissatisfaction of some psychologists (e.g.,
Carl Rogers) with the scientific study of psychologists such as behaviorists (e.g.,
Skinner )."
Maybe that can be interpreted as: "They were failing to provide impressive results using quantitative methods, so they decided to switch to a method that made even utter nonsense look impressive and was almost impossible to prove invalid."
The quotes are from
https://www.simplypsychology.org/qualitative-quantitative.html I found it quite amusing, and a good example of biased perceptions. Since it's in a psychology journal, the author and editors must perceive the content as supportive of psychology's reliance on qualitative data. From my perspective, the article accomplishes the opposite, showing the weaknesses of the approach and the self-serving nature of it.
Hmmm, psychology has one major success: it saw the weaknesses in human reasoning and used psychological manipulation techniques to make psychology look better than it actually is. If you can't show statistical evidence of success, convince people that statistical evidence should not be applied to psychology (just apply appropriate bafflegab and handwavium).