No idea why this was downvoted, you are correct.
Furthermore d3, typescript and jquery is javascript so the question is more like "do I need to learn how to use tools to make websites?" at which point it is kind of silly.
Furthermore d3, typescript and jquery is javascript so the question is more like "do I need to learn how to use tools to make websites?" at which point it is kind of silly.
No javascript needed to make a perfectly functional, efficient and useful website. Maybe it doesn't fit into your description of a "real" website?
That is just not true. I am sure that most web developers don't know d3, svg (other than exporting it from a drawing program) or typescript.