No, Blitzway did the right thing. No company should conform to the lowest common denominator.
Not all HT are off scale. But sometimes they just rely on a stock body and sign off on it as being 'near enough'. I remember later batches of
The First Avenger Captain America had long ankle pegs included in a bag because they realised that they'd signed off on him too short.
Or a company like Sideshow confuses actors altogether and gives Hoth Han Luke's body, and Hoth Luke Han's body.
Kit sells a pack of various size extenders that you assemble as required. Though sometimes it's just best to swap bodies. The Disney Krennic body proved very useful for smaller characters.