You say "no one knows coffee better than he does", while blatantly disagreeing with his entirely empirical points in his video on decaf, that it can be made by several processes, all of them are fairly good, and the result can be masterful?
I live in a hockey capitol. That makes me nothing like an expert. Same for you.
Okay, so you make brilliant decaf. That means your point in this thread is moot?
Funny thing on that "subjectivity" is when you disagree with other people in this thread, you've plainly said they're just entirely wrong.
When someone disagrees with you, you hide behind "subjectivity".