It kind of peeves me that they never mention the weekly DLC updates for Fire Emblem in their PR updates, but they do for Mystery Dungeon.
NOA didn't have confidence in Fire Emblem. That explains why they weren't in a hurry to announce it (slip at E3 by Reggie followed by retcon trailer on Nintendo Direct), and why they didn't order enough copies from Japan to cover sales (U.S. shortages that still are affecting some, based on Amazon going back to "2-3 weeks" to order a copy).
As long as they continue to bring them over, it's not terrible, but agree that it'd be nicer if NOA gave more props to the Fire Emblem fans. ~140K retail + ~80K eShop (greatly inflated due to shortages) + ~20K bundles = 240K in the U.S. (140K for comparison to past FEs, which sort of puts it in line with Sacred Stones in the U.S. after two months)