He doesn't argue the "children" thing, mostly because he agrees. Maybe some sixteen year olds would get defensive over being called a kid, but Dave is cool still being a kid. He doesn't mind being treated like one, since that experience was largely robbed from him anyway between Sburb and Bro.

"There's a good handful of us little scamps runnin' around here, getting underfoot and all that." He has to pause to think about the actual number, mentally counting off while idly making their way to the lift. Him and Karkat, Kubo, Dipper and his twin sister, that Pidge kid from movie night, the mini-Reaper who he's pretty certain has to be a kid... And hell, who knows who he hasn't even met yet.