I have individual net ratings in 10-game increments starting earlier in this thread. Jaden's has indeed been going up. His individual Net Rating since January 1 is +6.8, which is third best among the main rotation. DDV and Naz are the only two that are better since then.
It's not an exaggeration to say that he has had a dramatic in-season turnaround. Since the numbers above are for the full season, they of course still include the first few months of the season where Jaden really struggled.
One other point on Jaden is that he along with Ant and Rudy probably play the most against the opposing team's best players, so they are often on the bench when the likes of DeAndre Jordan and Julian Strawther are in the game for Nikola Jokic and Jamal Murray (for example).