GodotObject vs RefCounted: useless in C#?

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Godot Version

Sdk="Godot.NET.Sdk/4.4.1"

Question

I have a followup question regarding this thread: Does the GC collect GodotObject Instances?

The documentation page for RefCounted states:

//     Note: In C#, reference-counted objects will not be freed instantly after they
//     are no longer in use. Instead, garbage collection will run periodically and will
//     free reference-counted objects that are no longer in use. This means that unused
//     ones will remain in memory for a while before being removed.

The dotnet runtime already maintains a reference count for all your objects so it can run its garbage collector. If that’s all RefCounted does, then doesn’t that make it redundant in C#?

GodotObject is IDisposable so any memory cleanup that the engine requires would be implemented in Dispose() or the base finalizer when the GC does its thing. Or am I wrong?

Is there any advantage to using RefCounted over GodotObject? It seems like that makes it do the same thing twice.