That's your interpretation, which isn't the same thing.
I don't NEED to see a system at all, in fact my blind testing is conducted outside the listening room. Yes I do actually carry out blind testing, but double blind testing to please someone else because they demand it, never.
It isn't zealotry at all, just simple grounded common sense. For years I have read reams of twaddle about double blind testing, not called for by the people that really matter, but by those that sit on the sidelines carping about it. If that offends then I shed not one tear of remorse. My view has always been to give credit and responsibility to the person that puts their hand in their pockets to buy whatever they wish without criticism.
I'll ask you now, what purpose would a double blind test serve in YOUR choice of hi-fi components and have you actually done it yourself as part of a purchasing decision?