Absolutely against this. This game has gotten RNG-heavy enough as it is. There should be at least a minimal amont of thinking involved.
I make mistakes constantly.
I forget about Stealthy traits on enemies all the time (Hi, Fizzbang!).
I tend to misjudge even after careful checking before activating a converter if I will get a 4-match (Hi, colorblindness!).
I sometimes am just dumb and click on the wrong spell (Hi, muscle memory!).
But to me, this is part of the game. It’s like in chess - you can take your time deciding on your move, but in the second you touch whatever piece you wanna move, you have to stick with that one. And if your decision sucks and it turns out that your opponent in chess can then take your queen out of play, well, too bad, I doubt they’ll say yes if you ask them if you can undo your move.
This game is already very player-friendly, despite what feels like a million people here shouting that the AI cheats. You always get first turn - and that is not normal; there’s a lot of games having a random coin flip at the start - the AI can be skullbaited and just does dumb things a dozen (Hi, AI-Aurora, good job spawning the gem color no one on your team needs!).
If you want to play a game where you don’t have to make even a single bit of effort, there’s a lot of MMOs with automated combat or Window’s Spider Solitaire.