Indeed, used to be like that but now it doesn't. Have changed it in the post.
In every environment making web site, just a little bit will be needed (or a least the very basic knowledge of how a website works). If there will be ever a B4W, the same will apply. Just like now you need some basic understanding of how an android or a iOS app works.
See my latest tutorial on how you can use an external WYSIWYG editor and write the logic of your website in B4J:
WYSIWYG Web Builder (https://www.wysiwygwebbuilder.com/) is a cheap Website builder that makes it very easy to make your design. @Alejandro Moyano mentioned it in his post on his history with B4X. This gave me the idea that it could be used to program the logic of such a site using simple B4J...
I would really suggest you rethink in having a look at BANano. At the very least, it is
A LOT easier than starting to learn javascript, css and html. But that is up to you...