I agree with the point of your question, but I do know that in some cases it's a matter of codebase count. Which is to ask would it be better to have 1 codebase that serves as your website and native views? Or is it better to have X number of codebases for your views based on the number of platforms you'd like to be on? Especially when in all cases the views should be the same regardless of platform/native.

Sometimes native is forgone to provide more centralization of views. It's not always good to custom build for every platform when you want consistency in your UX across all platforms.

It all depends.

EDIT: Grammar.