"Surprisingly, 69 percent of younglings say their colleagues speak in too much jargon at work, while only 38 percent of graybeards have the same misgivings."
Not too surprising. It just means that some of us have heard it all before, several times around, learned to separate the wheat from the chaff and decode the former. The young are fortunate not to have endured that. Yet.
At its best a jargon is a specialised vocabulary which enables one to say in a few words what would require many less specialised words to explain fully. It depends on the listener or reader sharing that vocabulary.
At its worst jargon is a specialised vocabulary taking many words to say that which needs no explanation and could be said in fewer, less specialised words.
Then there are those who have heard the words of the first, have no understanding of their meaning but trot them out any way, hoping to sound as if they're in the set that does understand them* and mixing them with words of the second.
* E.g. Amber Rudd with "hashtags".