It's never wise to assume that a player's career track moves in a consistent pattern. The track moves a lot more like a roller coaster in the first few months or even years of a player's career.
Consider the journey Al-Farouq Aminu has taken. He made 45 3-pointers as a rookie, suggesting he could be a stretch-4 or even a full-time 3 in the NBA. Look closer though and you'll see he made 32 of those 3s before New Year's Eve of his rookie season, which is two more than he made in his last three full seasons. Combined. This season, however, he might have 20 made 3s by the trade deadline.