I'm sure you've heard of the BOSS System. Have you ever tuned a rifle with one?
Yes.... they sucked heavy ass... and the "tuning" was marginal at best.
You ever shot a ladder, picked the best load..... then tried to de-tune the load with the boss? That would be a far more apt experiment here....
Still haven't come up with a good answer for why a suppressor doesn't effect ladder developed loads.... or an example of accuracy getting worse with a can.
There is another explanation other than pure harmonics..... there has to be...