This is true, but it's also a sign of bad design. We've always assumed that Hand Limit 0 said "you cannot hold more than 0" cards, because the other hand limits are worded this way, and it's something of an unpleasant surprise to learn that it isn't.
Or it was simply overlooked when X=X+1 (and renamed to Inflation) was introduced. That said, we all know what happens when you ASS-U-ME Timothy