So some notes
First
When he walked up on the one guy he was likely trying to turn the tables so the guy would taze him
Second on arriving and determining he was drunk I'd have determined how drunk
The guard might have been able to say the approach was mildly threatening
They did ask where he came from and how he got here which wouldn't matter if they didn't test his level of intoxication
Additionally he has no id
And he doesn't speak English very well
That would have resulted in me demanding records from his supposed employer
Basically a bit more digging to ensure this wasn't an imm issue
He is asking the correct questions and they did call in an interpreter
So. Overall.
However I wouldn't have let a bystander sit back down until I moved him further away and I would not have turned my back on a perp

He didn't do anything confrontational to the cops so it's not unheard of to cut him a break but I'd follow up with the employer to make sure he isn't an illegal and didn't have any pending warrants or a history of drunken behavior or probation or parole

Apparently not that great of an interpreter and suddenly he speaks better English lmao