From a purely pedantic lawyer's point of view, he was charged for "possession" of drugs after they were found at his house, that's not proof he personally ingested them. Could have been someone else's left over from a party
On a unrelated issue, how are the Yanks handling this question now that marijuana is legal in half the states? How do the Dutch do it? I would imagine there aren't too many teenagers left in Colorado and California who can fill in that form honestly. Won't help the pilot shortage