The situation's not BAD, what it is is uncertain. It's not uncommon for print runs to drop off for manga after the 1st book. It can be OK if support holds steady. Whether that happens remains to be seen. I certainly hope so.
I get the impression from their commentary over time that best place to preorder from in the states is B&N. Presumably because demand = copies in stores I'd say. I've noticed they do manage to price match Amazon. I will probably shift entirely to there from volume 3 onward.
If anything that blog leans toward "good news" as last I heard, the worry was Origin wouldn't move well in bookstores and they'd get smacked hard with costly returns. Apparently this did not occur.
I would suggest that it's not the medium, but the quality of perception and expression, that determines the significance of art. But what would a cartoonist know? -Bill Watterson