Both this piece and the piece it’s imitating seem to have 2 central implicit axioms that in my opinion don’t hold. The first, that the constraints of the home grown systems are all cost and the second that the flexibility of the general purpose solution is all benefit.

You generally speaking do not want a code generation or service orchestration system that will support the entire universe of choices. You want your programs and idioms to follow similar patterns across your codebase and you want your services architected and deployed the same way. You want to know when outliers get introduced and similarly you want to make it costly enough to require introspection on if the value of the benefit out ways the cost of oddity.