If you control a Gagaga monster while you play Gagagabolt , you can target any card on the field and destroy it, which is just what you need when your opponent controls a high ATK monster or has a Trap Card Set that would stop your other plays
12 Cosmic Blazar Dragon Cosmic Blazar Dragon requires a lot of resources to make, and is one of the few Monsters that need a Tuner Synchro Monster and two non-Tuner Synchro Monsters
Infernal Grasp costs life, but that shouldnt matter as much with your Food tokens
Physical Card (not digital)
While its not hitting anything large or alive? its still going to hit the majority of mana rocks, engine pieces, equipment and Sol Rings
So as painful as it felt to spend a card killing these elementals post-ETB, leaving them alive gave your opponent a huge opportunity to get even further ahead