Sometimes it’s not enough to use ‘Big Spoon Wargames’ figures, I’ve had youngsters bicker because I wasn’t using the right (i.e. newest) iteration of figures.
Just one example, went to a fantasy tournie with my 10mm High Elf army. I’d converted Citadel baby dragons to act as my dragon riding heroes and wizards and was told I couldn’t use them as they weren’t GW figures. A brief conversation established that the figures were as old as, or older than the teenage GM and that GW was just an evolution of Citadel. Then a senior staff member wandered by and made favourable comment on them. The combination was enough to persuade the GM to accept them … reluctantly.
Growing old is mandatory, growing up is entirely optional!