Uh, PatWill is 19 as well, just to name an example - so why would age be a critical factor for Poku over other prospects? Not to mention they broke the mold with drafting White, who was much older, which I wouldn't gloss over - though I do agree they might be looking for prospects on the younger side. The drafting Euros is lazy, they've drafted European players in the past just as much as they've drafted American ones, they literally split 1/1 last year with Luka and Keldon and selected two American players in DJ and White in previous drafts. Again, no certain indicators for Poku specifically there, or any Euro for that matter. As for the scouting, I agree it's been obviously difficult, but then again, there hasn't been a single mention of Poku's name from anyone even close to the Spurs org - and of course you'll say they like to "keep it down", and I agree, but again there's no clear indicators in favor of Poku there.
Just to be clear, I'm not trying to tear down Poku or anything, as a matter of fact I see things in him that are promising enough that if the Spurs pick him, I'd trust them to maximize his talents. But I still fail to see any non-biased indicators that the Spurs might pick him over other prospects; just like you could've made that age argument two seasons ago and be dead wrong when the Spurs drafted White, I don't really think they care about a prospect's age or place of origin as much if they truly think he's the BPA. At least not to the point where I'd try to draw future conclusions because of it.