While that post is technically correct, they’re only bringing up stuff from their youths. Picard mellowed out a hell of a lot as he got older and is an extremely calm and diplomatic individual by the time he takes command of the Enterprise. Kirk cheating on the Kobayashi Maru was his first step in realizing that he could get away with almost anything if the results were good enough. These experiences do help them a lot later on, though; Picard’s reckless and rebellious phase means that later on he was extremely good at keeping his cool in dangerous situations and assessing risk, while Kirk’s intelligence and knowledge is why he’s able to make his zany plan work even though he only came up with it five seconds ago.

Picard is like if Indiana Jones was injured and had to stick to just teaching.

Kirk is like if Velma Dinkley started solving mysteries by punching out the monster the first time they met.