Models > Toys. Taking pieces of metal and plastic, glueing them together, and painting them to take a unified shape in an army is building models, not playing with toys. I've found that you can take away a lot of the bluster of some people by showing them what you models looked like before they were assembled, and what they look like all assembled and painted. That takes time and talent, yo!
I also wholeheartedly agree about your little army men straggler. Show him the ropes of the hobby, and try to get him to play. If he likes army men, maybe there's an IG player who will let him control a unit for a battle. If the kid still seems interested, maybe everyone from the club could chip in to get this kid a box of troopers or something. A small amount from everyone could really help him get into the hobby!