It's OK to be happy for somebody that has different beliefs as long as they don't infringe on others.
My opinion: The unchecked posting of "this cable made my headphones have much cleaner bass" and similar fantasy-opinions is extremely destructive to the audio industry, and ultimately its customers.
So ultimately subjective fantasies about what gear does, publicly shared, do infringe on others, at least in the aggregate.
Imagine if all the millions spent on fancy cables had gone to a good speaker manufacturer and got rolled into R&D instead.
Imagine "audiophile" wasn't an epithet used to refer to loony old techno-superstitious men with too much money and not enough sense? What if it was still regarded as a hobby that anyone could get involved with, enjoy, and learn from?
Imagine if EVERYONE demanded good measurements from manufacturers, not just a few of us cranks in one corner of the internet?
Maybe it's not Timmy's fault that he got taken in by snake oil salesmen, but once he starts repeating their bogus claims, timmy is now spreading lies himself. He's directly reinforcing this culture where people believe in magic electronics whenever music is involved, but not at any other time.
For the sake of others not yet fleeced, even inadvertent lies should be called out.
Frankly, the belief in magic in the audio world is so far beyond stupid, it's weird that we even need to discuss it. There is no reasonable doubt that well over 99% of people saying they heard differnces in DACs, cables, etc. are just experiencing cognitive bias of some kind. These biases are trivial to create, measure, and even experience yourself. And yet most people "in the hobby" get violently angry when confronted with this extremely, EXTREMELY common phenomenon in listening. They deny entire fields of science but accept the very same science in other contexts. It's no different than flat earthers. Why should anyone put up with it?