He wants top level functions. He wants to not have to write classes if he thinks the domain doesn't need modelling as objects.

You can have static classes that can contain nothing but static members - so effectively a namespace with no instantiation of that class allowed so no objects.

I know, but many people dislike boilerplate code.

You can use a static class though. It's 1 class that then just behaves like a namespace and doesn't need any object modeling.

You could create an F# class library, put your functions in there, and then call them from C#?

They probably wants to not have to write classes if he thinks the domain doesn't need modelling as classes.

Objects are just initialized memory with a vtable, or actors that sends and receives messages...