The web is flooded with Deep Learning tutorials that are both free and much higher quality than this. I can't tell if this is vote manipulation or if HN just upvotes anything with Deep Learning in the title without ever checking the link.
Personally I flagged this because I don't think low-quality content marketing stuff like this belongs on the front page.
I'm currently going through the course and found it a pretty good overview to get into deep learning but I guess it depends on where you are coming from. I only found the multiple choice questions/answers can be improved a bit but I mainly paid attention to the videos.
The Stanford courses (224, 231, and the Transformer one) are a safe bet. In general, I would recommend university courses where the lectures are online. There are a lot of them. Fast.ai is supposed to be good as well from what I've heard, but I don't have experience with that myself.