It’s natural for him. He couldn’t read a speech and sound good at all, and he sure as hell couldn’t talk about policy for a couple hours. The content of what he says is jingoistic, self-aggrandizing, vindictive, often nonsensical and generally awful, but that works great for his target audience, who have been raised on pastors saying nonsensical crap and outlets like Fox who were talking nasty nonsense years before Trump was a politician.