In a "typical" 3-tier app, you need a specific, explicitly written handler for each combination of data type, filtering, aggregation and output. That might not

In a "typical" 3-tier app, you need a specific, explicitly written handler for each combination of data type, filtering, aggregation and output. That might not be a big deal if the amount of endpoint variants roughly corresponds to the amount of custom views in your app, but not every app is like that. Quite a few make do with just a few general views like a table, form and maybe map. Having to write explicit server-side handlers for every query variant means abstracting these views on the frontend is not viable, so apps with some 100 tables and little table-specific functionality take much longer to make and are much less flexible. It might just be personal bias, but I think these kinds of projects are common and important. They're near invisible, but even small-ish companies need somewhere to store their domain-specific data, and we should be thinking of ways to make that kind of software better.