The deck doesn't really work the same with Padeem at the helm, as it was specifically built around the card draw ability of Shimmer Dragon
If the target of Furnace Skullbomb's last ability isn't a legal target as the ability tries to resolve (probably because it has left the battlefield), you won't draw a card
Its appearances across subsequent games have kept it in the public eye, ensuring it remains a part of the Pokmon conversation even as newer generations introduce a plethora of alternative Psychic-types
They only changed the rules for tokens, mostly so Incubator tokens worked
Slap on a Birgi, sac outlet, and/or reducer and you have a deathloop that can win any number of ways
While there are plenty of other duplicating effects in the game, this is probably the most cost and card efficient way to get something twinned