Webtoons is a Korean naver, 95% of comics in Webtoons have the art style similar to manga/manhwa/Eastern stuff. Stylized Western cartoon has a good reception there too.You won't have any problem publishing there if you have something similar to Eastern style or stylized cartoon even Western (Disney, Sugar's Steven Universe, cartoon stuff) , because most readers are into this stuff there, here and all over the internet. Manga/Manhwa and Western stylized cartoon dominate the internet (online comics) with those art styles. It's their realm, its niche. Like Western art style (U.S. "realistic" comics, etc) is for printed publishing comics industry. They are different realms with different audiences. And I won't talk about the story genre in this topic, it has to do with preferences too.
I saw some B&W with a good reception on Webtoons. If you're doing stylized (cartoon Western) or manga/manhwa, you shouldn't be afraid of anything. You're good to go
My personal opinion? Do your stuff the way you want and focus on trying to do it in the best way you can.