You're right of course - When I got my A4000 the WB on the hard disk was already set up to boot and display on a VGA monitor. It's seeing the bench in the first place to be able to change things thats the problem!
edit: but don't you think you're being a pedant? I mean what else are you going to call it? In the Big Book of Amiga Hardware they call it a VGA adaptor, or is it a case of "Must have the last word and debunk what other people have said IN order to massage my ego syndrome ". I would think that 'adaptor' is a fine name for it. I personally would use the noun, 'converter' when talking about something that actually scandoubles....