>>10199982They are.
Direct market has been a thing since the 90s and if it gets official distribution in the US, it's counted by most services. Good Smile, Bandai, and others have official distributors in the US.
If they're imported, only the bigger trackers like NPD will track those sales.
NPD itself has talked a lot about toys for collectors/adults being a big thing since like the 00s.
2004
https://abcnews.go.com/Business/story?id=346227&page=12008
https://www.giftsanddec.com/business-news/npd-us-households-that-buy-toys-growing/That said, Japanese companies don't make as much as western companies do despite combined international and domestic (Japan) sales. So their contribution in the west market is a lot less.