I would not characterize Anti-Cables as a "scam," any more so, than much higher priced cables, that may not sound any better.
The materials for most cables are not terribly expensive. You pay the premium prices for the specific design and creativity... and... of course... the brand name and image of the manufacturer. Not much different than virtually all other audio equipment.
I’ve got the Anti-Cables interconnects and speaker cables... and... they do sound superb... but... perhaps... not so much better than some less costly cables, or much poorer than far more costly cables.
I did buy some cheap "magnet wire" on Amazon and make some speaker cables up in a similar design to the Anti-Cables... and... they seem to sound about the same as the Anti-Cables - not much difference.
So... the quality of the sound from various cables... will vary a bit... based on engineering and design fundamentals (e.g. solid vs stranded, copper vs silver, twisted vs straight, inductance, capacitance, teflon insulated, etc.). The more the design transmits a pure electrical signal, rejects noise and interference, etc. determines the quality of the sound that’s transmitted to some extent.
But, the variation in the sound you perceive from various cables may not be very significant, depending upon the quality of your equipment, and power source, which will have a far greater effect on your perceived sound quality.
In other words, average equipment will produce average sound, no matter how "great" the cables may be... and... "great" equipment will produce "great" sound from most reasonably designed cables made from quality materials that don’t cost very much... whether the cables cost a little... or... a lot.