It is simpler for us dice players.
But there will answers from slots players that the mechanics on that game is easier and simpler for them so, there's always a balance for the games that we like.
I don't understand how the mechanics of slots can be simpler than the mechanics of dice. If we are talking about online casinos, then there is no difference since this is software. But if we are talking about a real casino, what could be simpler than dice falling on the cloth? And what can be more difficult than slot machines with non-obvious mechanics and adjustable settings?