The smooth talkers are usually poor doers. My experience with such people says that those who are good at PR are rarely deep experts and cannot be counted on to participate productively in a commercial enterprise. Don’t waste your time on these people: they’ve chosen an easier path, one built on social skills rather than solid technical expertise. There’s no shame in focusing on your work and on sharpening your own skill set. After all, that’s what makes you successful in your work. All else is extraneous.