This is part of this hobby. Personalization of your own gear and sound. People's do that every day on their cars. Replace the chrome wheels on their
cars with bigger and lighter magnesium one just for the look and a marginal drive feeling change. That's all good! People should be free to express themselves. When I replaced the cable on my HD650 I didn't expected them to become HD800. I'm experimenting with flavor of material and noticing characteristic changes in the sound and that what I like in this hobby. Experiment. Same thing when I exchange a tube in my amplifier. If you don't get any satisfaction on altering your gears that all good too. But to claim that their is no differences between all variant cables that is wrong.
I agree I used to not believe in cables sounding different but when I put a silver interconnect between my Dac and Amp it sounded much different. Mileage may vary depending on your audio chain. Same thing with my LCD-2's when I put on the norse cable things
really brightened up. So as an old non-believer Ive been converted