Luck manipulation is only possible in more recent entries by exploiting game-external factors like the system clock. But, in any case, when it comes to comparing games implemented in software (like Pokemon) with games that aren't, you have to distinguish between "the game" and "the software". The Pokemon game is designed to be non-deterministic from the player's perspective, regardless of the fact that the Pokemon software may be deterministic in some detectable or manipulable way. Just like craps would still be a game of chance even if you figure out how to fix your rolls.
So in your mind actual Pokémon games are deterministic, but the platonic ideal for Pokémon is not. Why would you assume the real Pokémon game was your mental model?
I mean the software implementation defines the game and it’s the only thing anyone has ever played. It seems to me any change you make results in a different game. It’s not like a game allowing pawns to move 3 spaces can be called Chess even if everything else was the same.
Actually humans can exploit the prng on for example Generation III Pokemon. It takes frame perfect timing, which limits how long you can do so, but it is possible at the start of the game.
This really falls into the same category as speed running using save game glitch: https://www.youtube.com/watch?v=qHTK5GLOFVM aka possible but only really useful if you’re trying to do something very specific.
Anyway, while I understand you assume this stuff to be impossible I simply suggest you do some research before bringing it up.
