A different video, this one from the other side of the coin, with Brent Pourciau and David Aardsma (starts at 2:15, ends at 12:50):
These guys don't seem like they know what they're talking about as much as the Baseball Rebellion guy in the first video but it's still a different look, which can be healthy if you like to follow prospects from this early on.
They think that Pardinho looks like he's matured early and don't see him growing a whole lot more, which could be an issue for a kid who's 5'9".
They also think that as he grows, his body won't be as flexible and some of the picture-perfect, fluid mechanics he has right now might tighten up.
Lastly, they propose the idea because he's so far ahead of other kids his age right now, he might get complacent and won't continue to improve because apparently it's hard to have a work ethic if you've got nobody to chase.