Let's put the point somewhat differently:
Let's suppose the audio issues tweak manufacturers are trying to solve are indeed material ones, so that their solution would produce a material improvement in sound.
Let's also suppose that the problems are very difficult to solve.
Wouldn't we expect the majority of tweak manufacturers to fall far short of the goal? And therefore that most tweaks would have only a marginal positive effect, if any? But that perhaps a small group would actually solve these problems, producing great results?
If that were in fact true, that would explain the fact that most of the posters on this thread don't report great results with the tweaks they have purchased, but some have.
Let's suppose the audio issues tweak manufacturers are trying to solve are indeed material ones, so that their solution would produce a material improvement in sound.
Let's also suppose that the problems are very difficult to solve.
Wouldn't we expect the majority of tweak manufacturers to fall far short of the goal? And therefore that most tweaks would have only a marginal positive effect, if any? But that perhaps a small group would actually solve these problems, producing great results?
If that were in fact true, that would explain the fact that most of the posters on this thread don't report great results with the tweaks they have purchased, but some have.