High draft picks always get their playing time, especially when they are considered a "generational talent".
Overall, yes, players selected with the first picks in the draft typically receive a lot of minutes in their debut season, but that's not always the case. Take, for example, Kwame Brown, Anthony Bennett, and Markelle Fultz, who were selected with the first draft picks, but in their debut season, they got few minutes and their performances were very poor, which isn't typical for players selected with the first pick in the draft.
There are/were so many players on the 1st draft are busted. We should also consider the rooking player on his debut team. Even if you are 5th-10th pick and you are on a team with star players you have a big chance of not getting a good minutes to start. but if you are on a bad team you will more likely to have a great time playing coz they are more willing to sacrifice for you and see your talent at early time.
I can still remember the batch of LBJ and MELO when Detroit pick 2nd and get Milicic! theres Wade, Melo and BOsh and other good players.