One doesn't have to believe any online person; however, based on the enormous "subjectivist" opinions, people actually do hear differences, right or wrong, personal preferences included, regardless of measurements and decide to what sounds best to them, in a system, in a room. Nothing you say will change that.
Fleschler, that comes across as a dogmatic statement "You Can't Change Our Minds!" Do you really want to seem that inflexible? Isn't being open minded a two way street? It often seems that people using a purely subjective ("Golden Ear") paradigm will castigate the "objectivist" for not being open to their claims, but will remain stubbornly opposed to being open to the objectivist side.
Also, you seem to be projecting your own attitude on to others. It's simply not true that "nothing (Amir) can say will change" minds. He, and others on his site, and other people on the internet over the years taking a similar view, have changed plenty of minds. ASR is FULL of people who used to be in the "everything I think I hear is real" camp but who are taking a more critical look at the claims of many audiophiles and high-end audio companies.
Honestly, not everyone is so close minded to the arguments and evidence presented by Amir. Look at the huge number of comments under his youtube videos - it's full of incredibly appreciative comments!
He tales the joy out of the hobby. It is a hobby for most of us, not a vocation.
Again, please be aware this is speaking for yourself. In no way does he take the "joy out of the hobby" for tons of people who appreciate the knowledge gained over on ASR. He's not entering your listening room and taking away your tweaks, or telling you that you have to stop buying whatever you want.
One could just as well complain that "all these audiophiles telling us everything needs break in" are taking the joy out of the hobby. But...one is free to ignore this and take our own approach (and/or look at the evidence for such claims if we wish).