alt Hacker NewsSwap China for Russia/Iran and Venezuela for Syria/Yemen if you want an idea how that plays. Spoiler: not well for the proxies.
Without some sort of underlying religious ideology to neutralize being concerned about the likely outcome of hellfires dropped on you from 20k feet if you kill American soldiers, I can’t see many stepping up.
In this scenario, why should Venezuelans fighting against US occupiers be labeled as "proxies" for anyone.
Even if they are aided by others, they would still be fighting for THEIR freedom, in THEIR land.
(distinguishing the good guys from the baddies becomes easier, when you strip away the fluff)