Based on my experience, you'll get problem when the data is somehow large, and at that point it'll be too hard of a problem to fix / optimize CMIIW. Use it for

Based on my experience, you'll get problem when the data is somehow large, and at that point it'll be too hard of a problem to fix / optimize CMIIW. Use it for prototyping and migrate to your own backend, or make a driver compatible with google sheet api, to connect to sql.