Can you claim to be an audiophile if you just listen to the radio? I think the term audiophile means more than a music lover. What about those that only attend concerts and do not listen to anything at home. Admittedly they are a rara avis but they may exist.

I wouldn't rely on streaming as my software source. The quality is in the hands of the streaming provider and can change at any time.

Yes I agree that the 'size of the music collection' should not be a criterion for an audiophile, but when the cost of the reproducing system is tens of times the cost of the software collection, something is amiss.