I don't know anything about this kid, and I usually don't like the small ones, but based on that video, that swing sure looks like it contains power potential.
Maybe he can't play SS, but I don't put much stock in what the national pundits say because according to them, a guy won't stick at SS unless he's elite. This despite the fact that by definition, half of the league is below average. Seems to me the only concerns that tend to hold up are the ones about the arm-strength. The concerns about the speed, range and size don't usually amount to much. But maybe he does have a weak arm.