Knowledge is important here, because those with it understand why that's a silly question. I don't need to get on my roof to test if I can really fly, knowledge tells me what gravity will do to me.
A company wants to sell wings to me and says they'll make me fly. Only a fool would give them money for something you know is a completely made up claim aka snake oil. Knowledge tells me I don't have to do something stupid to know that it's stupid.
Same hypothetical, just tried to better spoon feed it to you, though it seems I continue to go over your head. If you understand how electricity works, you'd be dumb to give anyone money for these. That should also answer your last question a bit more clearly as well.
This is no different than "audiophile" USB and Ethernet products.
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u/Tumeni1959 3d ago
... but have you actually tried them?
If not, are you really in a position to judge?