My issue is ubiquity and reliability. This doesn't seem to have a mobile component and I'm not sure how reliable the service or even company is. The latter of which can come in time.
It's cool, though. I've been thinking about using something like Airtable for this sort of thing.
(1) is a native mobile/desktop app instead of web-first, because there’s no reason my most personal stuff should be available globally
(2) stores data in a REALLY open format like JSON or YAML, because I want maximum interoperability and minimum but rot
(3) synchronizes across devices using generic file sync tools like Dropbox, google drive, or One Drive, because all my other stuff is in there and they’re as secure as anything gets
(4) runs anywhere without administrator privileges or special run times, because I want to be able to use it at work
(5) federated the data store so I can have a single view into personal, professional and proprietary information, while storing and sharing them appropriately to the sensitivity of the data.
It’s pretty easy to get going on a free Heroku instance too. Consider trying it out if you’re interested in a tool like this.