I can understand the need for Animated works worldwide, but like
@GT865 mentions it needs to be separated due to Japanese Anime, Manga, LN and VN's more of a niche that is easier to maintain, and for me I would say Japanese Content has been co-opted by Western Interests at points to rewrite things. As soon as VNDB allowed Western "Visual Novels" or "WEVN's" it has become annoying to search around the site, and it is flooding it with low quality Western Content and tons of shovelware as a whole that floods the page and you then need another search filter on top when searching for Japanese Content under the genres you wish to see.
The reality is when the Internet had Web 2.0 things were separated and I think the Internet was better for that at points because there was not a lot of crossover or forced mixing of audiences and crowds with tons of friction happening. I do think someone will make their own version of Western Media Database eventually though as there is renewed interest with Western Content and getting away from the Wikia's and odd Fandoms that keep getting co-opted to rewrite history and characters as a whole due to centralization. It just takes time for some people to figure it out how to innovate and make it work.