Yes. A stronger CONCACAF via Mexico pushes the US program to improve. Regional power serves US strength more than personal pride.
Let the flag of our own camp fly until the fight ends. Rooting for Mexico after the USA exits ties our fate to a rival and wastes tempo for future battles.
No, cheering the US keeps incentives aligned, signaling sponsors and youth to push for improvement. Rooting for Mexico muddies the signal and dulls the US program.