Ambassador and Tournament, certainly, aren't just "shut off your brain and go through the motions" cards in the same way the other three are
I don't see how chapel and alchemist are shut your brain and go through the motions type cards. Chapel yes is pretty straight forward in how you buy and play it, but most of the time it greatly increases the strategy space because of the amount of decks that now become viable.
Alchemist on the other hand is a a completly absurd veto for the reasons you are giving to veto it. First it is rarely dominant and most of the time a major trap card. Two the only time you want to go for alchemist is with some decent support. And three with that support avalible alchemist games are almost never just "go through the motions" games.
The "shut your brain off and go through the motions" cards are stuff like IGG and JoaT