From a technical point of view yes, your own hosted static site is way more efficient, you have more control over the stack, scaling, better metrics, security etc, etc.
From a business point of view it's more like...who the f*ck cares what you use? Did they read it? Yes? Good, move on.
From a business point of view it's more like...who the f*ck cares what you use? Did they read it? Yes? Good, move on.