If I'm swinging for the fences I probably do take Green and maybe Mobley over Cunningham. But Cunningham is good enough that you can potentially hit a home run on a check swing. So that probably makes him the right pick.
He may be the safest pick. The guy with the highest floor.
Safe picks pre-draft almost never make for the best picks 10 years later.
I'm not sure that is true at least when dealing with players that are top 3 type picks.
I'm not saying you want to be full-on risky, but if one of the lines of reasoning you use to talk yourself into Cade Cunningham is that he is the safe pick, then it seems shaky.
You don't want the riskiest pick (which is why I wouldn't take Green), but honestly, that was the line of reasoning why the Suns took Ayton over Doncic and Young, or the Cavs and Bucks took Wiggins and Parker over Embiid, or the Blazers took Oden over Durant, or the Bucks took Bogut over Paul, etc.
Many of those moves, from my memory, had the following line of thinking. "Yeah, we know some of those other guys have good upside, but we feel like this guy has the highest floor in the draft and has good upside."
I like Cade Cunningham a lot as a prospect, and I would for sure take him over any prospect not named Evan Mobley in this draft or last year's draft. I'm just arguing that this line of reasoning fails to see the significantly high floor that a versatile player like Mobley has, and a significantly higher upside for team success.