The first official "Technical/Engineering" university was in Czechoslovakia and predates anything in Germany by a few generations and it is likely that future German ones modelled after the Czech one. Specific Military engineering academies with formalized curriculum opened as early as the late 1600’s in France. Prior to that formalized engineering concepts were taught to military "engineers" and architects (which lead to civil engineering). The word engineer dates back to the middle ages. Facts do matter.
I actually do talk to people at my local physics departments. Universities often can provide access to advanced test equipment at reasonable rates, and they are more than happy to participate in joint industry research to keep a grad student busy if it does not distract from their primary research. While the bleeding edge theoretical physics gets the media glory, much of the work is in more mundane areas. I am also fortunate to have the Perimeter Institute for Theoretical Physics in my backyard and often attend their public lectures as well as at the University of Toronto.
Almost invariably, what is at discussion is what happens at the smallest scales, the largest scales, or at the very extremes of speed, and how robust current models are for "regular" problems similar to how Newtonian mechanics is extremely accurate except when dealing with objects approaching the atomic scale, or very high speeds. Anything in audio would be a "regular" problem. To suggest that unknowns in the current models and understandings of physics are responsible for perceived sonic differences in some products amounts to "special pleading", especially when there is no evidence that any of these products illustrate properties not explained within the framework of standard models.
As well, conceptually, scientific "theories" are very robust and don’t equate to casual use of the word "theory". They have been rigourously developed and extensively tested, and the only thing often preventing them from being "fact" is the extreme rigour of proving they are correct in all cases. Those "theories" are responsible for all our fancy gadgets, the satellites in space, and any number of things more complex and rigourous than audiophilia.
p.s. see #3:
https://thebestschools.org/magazine/15-logical-fallacies-know/
To understand how science works.. and not attack everyone with ’facts’. As facts are for engineering and this is exploration, the realm of science, which has no facts, only theory. The word fact is a common misconception of the nature of reality and has no place in science. (go ask the entire professorial staff at any university physics department)