Except AST didn’t “didnt work” when you drew the wrong card because its entire minigame was around mitigation and playing around the RNG you got, if you were relying on drawing something in particular for a particular mechanic then you were playing AST wrong, what set AST’s gameplay apart was the fact that you were playing something on the side alongside your healing. Current AST just gives you extra charges of useless single target heals you barely use anyway and calls them “cards” despite there being zero minigame around playing them
Modern AST doesn’t “always work as advertised” it just makes the cards to completely pointless and useless with zero feedback on “playing” them well that it just feels like you are playing a generic filler regen healer which is what WHM has felt like for years