The thing with drafting is that there are only a few players that come along that make a real difference, impact a title. And you don't even know for sure who they are. The top players in the league that have impacted a championship in the last several years include the following:
Shai Gilgeous-Alexander (11th)
Jayson Tatum (3rd)
Nikola Jokic (41st)
Steph Curry (7th)
Giannis Antetokounmpo (15th)
LeBron James (1st)
Kawhi Leonard (15th)
That is it for the last 14 seasons or so. 7 Players. And only one of them was an actual consensus #1. A few other recent #1s may join this group (Cunningham, Flagg), but for every one of those that has a chance, there are several others that are more like Zaccharie Risacher, Zion Williamson, Deandre Ayton, Markelle Fultz, Ben Simmons, Karl-Anthony Towns, Andrew Wiggins, Anthony Bennett, and on an on.
Tanking and drafting fails more than it succeeds, just ask PHI fans. That is why I don't understand how some want to see the Celtics start down that path. It may well come to that as some point for the Celtics, but I am in no rush for it.