With so many sets in Pioneer, the chance that the energy core is just the best way to build decks to such an oppressive extent is much less likely than it was in Standard because ultimately there are still only two sets that contain these energy cards
Special Summon, from your Deck, 1 Wyrm-Type monster with the same Level as the Tributed monster's original Level, and if you do, any monster destroyed by battle with that monster is shuffled into the Deck instead of going to the Graveyard
Most notably, before the Scarlet and Violet Series, Ultra Rare cards (such as Pokmon V) were denoted by white stars instead of the current two silver stars
While the developers were correct to operate under the assumption that many, if not most of its audience were not going in with extensive competitive Pokmon card knowledge, it should have made an allowance for those who already knew how to play either from playing with or reading about real Pokmon cards or from having already played through the Game Boy Color game before starting a new adventure