These projects look great for reading data (although there are times where I would prefer to transform the data server side, that's not a deal breaker). However, they always seem lacking to me for writing data if I need to add business logic (I don't want to do this with triggers).

Then if I am going to write an API for writing data, just adding some for reading data doesn't seem like much effort, although I see the value proposition as frontend development getting a very consistent API without having to ask the backend to develop APIs.