Also there is an important difference between being sexless and having low birth rate. It might not be obvious to you but one can have sex without having children.
It seems to me that it’s you the one that sources their information from anime and/or 4chan.
https://minajp.com/sexless-japan-703
https://toyokeizai.net/articles/-/56360
https://www.japantimes.co.jp/news/2016/09/16/national/social...
https://japantoday.com/category/features/kuchikomi/sexless-i...
https://www.scmp.com/lifestyle/family-relationships/article/...
https://www.ibtimes.co.uk/there-any-truth-portrait-sexless-j...
https://www.japantimes.co.jp/news/2016/10/01/national/media-...
https://www.japanpowered.com/japan-culture/japan-the-sexless...
And the list goes on and on.
Also there is an important difference between being sexless and having low birth rate. It might not be obvious to you but one can have sex without having children.
It seems to me that it’s you the one that sources their information from anime and/or 4chan.