I for one think that "simple CRUD cases" is bullshit, those applications don't exist. In practice, System-of-Records systems are rare. (and should be, their value are inversely proportional of how many of those you have in your overall system).
Because if it was "just simple CRUD", one would use the database directly? Databases are already capable of handling CRUD and much more with way less implementation bugs.
Even assuming your application "is a system-of-record", how is it giving any more value that directly using a ready-made solution like Oracle REST Data Services, or PostgREST?