Thanks for mentioning nbdev (which as mentioned works well with DeepNote).
FYI, the blog post you linked to is a bit out of date - we have something much better for blogging with jupyter notebooks nowadays, which is fastpages: https://fastpages.fast.ai/ . It's compatible with the same annotations used in nbdev.
nbdev is actually orthogonal to what we're doing, and you can use it within Deepnote! I've written a short guide on it: https://deepnote.com/@the21st/nbdev-Deepnote-MQQVcO8aQV--6rC...