Many - no. Fast - yes, in principle, but this is not a plus. Rather, it is an indicator of how quickly a person is most comfortable to perceive information, but does not say anything about the way of perception and the quality of processing the information received. To put it simply, a fast-talking fool still remains a fool, and a slow-speaking smart person remains smart.
In practical terms, this means that a person who speaks quickly will experience some discomfort (maybe even turning into irritation) if the interlocutor speaks slowly. Well, a person who speaks slowly will not be happy with a quickly speaking interlocutor.
I have two acquaintances who speak unrealistically quickly, while chewing the endings of phrases a little. As observations show, they do not think very quickly, it takes a little long time for them to get it, any joke or question. But this is not their peculiarity at all, we are all human, and we all can sometimes give the brain a rest. So I didn't see much connection.