The value is in the rest of usecases that don't need that much of a performance boost. I think it's great that easier/higher level abstractions can be leveraged

The value is in the rest of usecases that don't need that much of a performance boost. I think it's great that easier/higher level abstractions can be leveraged for most business logic/usecases (using Rails/Django/other frameworks) and teams can dig down and bypass those abstractions for the few endpoints that they really need to be performant of (like this article describes).