My experience has been the opposite. Those who use the jargon extensively are usually covering up for something lacking elsewhere by using the buzzwords. Had a coworker get stuck on things like "synergies" and such, and was pretty quickly canned because he was straight up incompetent. He said "bleeding edge" one time too many and was cut.
Drives me ****ing nuts, touching base, key stakeholders, I catch myself using these sometimes. Hate it...
Watson's Dictionary Of Weasel Words by Don Watson
The brilliant and bestselling companion volume to Don Watson's Death Sentence
read this