Have to agree - the US has so much depth in this event, reaching out to a 16yo (even as good as he is) isn't necessary. If he somehow chokes (hope he doesn't) he is likely not emotionally mature enough to handle the fallout. This isn't a country (Canada for example) who hasn't any depth, so anyone that good is automatic with no pressure to get a medal. The experience might be good for him, I get that - but there are huge expectations for success in America. Anything less than winning in the 4x4 is a disaster (like the mixed 4x4) here.
Speaking of Canada, look at Morales-Williams who has gone from NCAA star (fastest time in the world at one point - a few people even talking about an Olympic medal) to not even close to making the final (a second slower than Quincy W). As it turns out he would not have been close to a medal at his best, given all the 43's in the final. But this the OG, this guy is now a Pro, so should be able to handle that, but the kid might not handle a bad race as well, with team mates depending on him - especially having a lead (likely) and having to hold onto it. He is good at chasing people, can he hold a lead? The best hope is that we just walk away from everyone and so he doesn't have to work that hard, has some wiggle room, but that is not a sure thing.