Anything we made would have _never_ been as good a UI and would have stopped us from being able to publish new content. The other nice thing about them is you can scale the integration effort. You can download a sheet from GS as a CSV then upload that in an admin page and you can probably ship that feature today. A tiny bit more effort and you can add a 3rd dimension to the data by finding an XSLX library and exporting the page as an Excel workbook. Eventually you can do something with their API where you just click "reload data from the master sheet" and you can generate all the data you need to preview the changes on the frontend. That's what our Airtable integration looked like. Airtable was very "pull this in via API" native and had a better way of expressing higher dimensional data in cells which matched nicely with Postgres storing arrays in cells.