If you'd ask me it's a perfect example of how not to structure a database. It's not even in the first normal form.
I'd love to create an Anki clone that has better UI/UX and a better database format and I think that would remedy some of the biggest pain points about Anki. But since most Anki users (me included) use several plugins that are quite essential to their Anki experience, an Anki clone would have to support those plugins, too.
