Let's think about this logically for a moment. Hi-fi tweaks all cost money and people who call them snake oil etc have never tried any of them because they cost money. So because of that it leafs to a couple of conclusions either they are to cheap to spend anything to try it or they don't have it. The other place that also comes into play is when you try something and you don't like the result is being honest enough to put it back the way it was and sucking up the loss. If you get a breaker cyro treated and you don't like the result putting the old one back in place no harm there just an expense. Just out a bit of money but if you don't try you don't know and you don't have any say about it because you don't know. The three skills that need to be developed if a person wants a good hi-fi is having an open mind, willinng to spend some money and omitting when you made a mistake and putting it back the way it was, and understanding what really is the source of your dissatisfaction with your system. Sometimes when you change something it may sound worse but the change is not the problem it is just showing a weakness somewhere else in a system.
I also find in amusing when you tell some one that they need to get a level out and make sure there speakers are absolutely level and then level to each other and that they are symmetrical with the room. Zero cost in doing that just some time and effort. Yet that is snake oil so does that make someone both cheap and lazy? That also gets to the point why some people are on these forums do they find it cool to talk big and do they really even have a basic system? If so do they ever turn it on? Or would they rather talk about it instead of listening to it?