I'm not wrong.
The very fact that the Warriors won't have an asset like this for the foreseeable future, is all the more reason to make it count. The Warriors are NOT a rebuilding team, so you can't use that blanket logic that you would for 99.9% of lottery teams, who're in a position to take that risk. They're a team that needs to win
right now; they're not in a position to wait around on the development of an unproven prospect. Neither you nor I know what Wiseman will be in the league, so it's no good sticking out your chest and being definitive with your projection of him as if you can see into the future.
I'm not even saying that using the pick on him is the right/wrong option, I'm simply saying that the real value of it is making sure it's used to maximize whatever time this team has left at the top, whatever that may be (using it on Wiseman; trading down and adding depth; using it to bring in another star and/or add depth).
Regardless, of how long Steph and Klay will be in the league, this core's championship window has about 1-2 seasons left. This is why I'm not convinced of using the #2 pick on an unproven prospect is the right route to take.