I’m currently on JSON APIs and AJAX. I did the D3 section yesterday. Surely less than 5 hrs. And I would probly finish this in the next 2hrs or so.
So this is just my current thoughts on this, as I also had the same question in mind when I started this section. As a web developer, and especially if you’re aiming to be a Full Stack Web Developer, we would need to know how to handle data and how to present them on the web. This also maybe gets you a foot into Data Science (?), but not quite…
It seems that Data Science is really growing right now, so I think FCC is kind of getting us equipped for that as well - which is really great. Because if an employer/client wants data presented on their website, and you’re a “Full Stack Web Developer” - actually, maybe even a Front End Developer - we should know how to do so (or have an idea what it is -'coz I looked into it and real-world Data Visualization is so much bigger than what we have here), right?
EDIT:
PS
I think you can apply for web dev jobs without Data Visualization skills/knowledge, but having it i think is a lot better.