I really couldn't detect any potential undiagnosed ASD but I could see maybe heavily masked inattentive ADHD. I mostly can only pick up on signs for stuff I have experience with. Maybe there is something else there. But heavily masked ADHD might account for how he had have a witty comment for everything. If I had to guess he was late gen X so there is a big possibility there. He did also go on a unprovoked rant about how "everything is bad for us" after vaping in front of the kids when nicotine/alcohol/other is not permitted around the them. He was like "as long as I got my nicotine I'm good to go" referring to the hike, and holding the vape pen up like it was some ambrosia. The main scout leader told him to put it away, then he proceeded to say how even oxygen is harmful to us. Peak entertainment from a nihilistic, jaded perspective.