Yeah, I agree. The fact that Nintendo's already done it elsewhere doesn't excuse it; I think the decision to exclude the charger in general, regardless of region, works more against the consumer than it does help them, it's just that now NA has joined the list.
It doesn't help that, unlike Japan, they released the original XL with the AC adapter in NA, so it makes you wonder why they decided to exclude it this time if they didn't before. I guess the desire for them to save some money is stronger now as opposed to then.