I personally remember thinking the planes would be hard to control, like I never pictured just... oops, suddenly these wings don't work with the laws of nature, straight down to the ground. I was a child when it all went down, so, I don't remember if it was people actually saying it would happen, just over exaggerating, or what. Since some take things literally though, it should not have been put that way, I could definitely see it being fear mongering, and that's not good.
There were things that could have been affected though, so one part being put wrong on purpose or not doesn't mean, we should have ignored it.
As someone already mentioned Mushishi; Natsume Yuujinchou is just so soft! I don't know how else to explain it.
I am old, so 2000s Fruits Basket, as well, mostly, as I actually finished it. I'm really attached to Ritsuko Okazaki's score. I haven't finished the recent series, but the 7 or so eps I've seen, made me super happy, as I wanted a series that adapted the full manga, and it nailed a lot of what I remembered.
OK, one more, as rereading your post reminded me of another romance series: Wotakoi! Sadly a short anime, but the manga has good feels, too.