Emulating those odds in real life is damn near impossible so more often than not, the Exodia pieces are just dead draws in your hand, making his Cloudian side of the deck extremely dominant (and yes, we do know Adrian is canonically running his Cloudians along with Exodia as we see Exploding Cloud in his hand during his final duel
Incapsula incident ID: 336000760017561780-5116396993254151
While it's not strictly impossible that the Game Boy and Game Boy Advance main series games could make an appearance, The Pokmon Company has shown hesitance to do so
Pay the required Shinedust to turn it into a Special Shop Ticket
Being a vehicle also means that it will survive most board wipes, after which it can start exiling creatures that you dont want to see again
Everyone only gets a handful, but theyre long enough spans of time to be reasonable as foundational units