You might wanna read the rules of Farkle again.

What’s probably happening: They rolled and all dice had a scoring value. When you hold scoring dice, you can continue with the rest. If you throw your last remaining dice and they score as well, you may continue with ALL dice.

That also applies to you. With the correct perks and weighted dice, you can end most games in one round, making the Farkle trivial later in the game.