Would you jump off a bridge before listening to Bach if I told you it would make things sound better afterwords? I'm assuming you won't.
For similar reasons I refuse to spend money on a DSD DAC before someone can
demonstrate that they're actually better.
Even if money isn't at stake, time is also limited, which is one reason why "you need to try it yourself first before you can make a judgement" is a useless argument. The other reason is that it can apply to
everything which means it is specific to nothing. If you tried every silly idea regardless of prior probability you'd never have time to do anything else. I'm pretty sure that you accept that there's a limit to what's even worth testing
somewhere since I doubt you'll be to eager to see if impromptu
BASE jumping will improve the sound of your stereo.
If there
is a limit then we methodology to determine that. What methodology would you recommend?