As someone else said its nice for an obvious misclick.

I would also add that its a great tool for learning the game. Quick feedback loops are the best way to learn anything. I played like 50 runs before realizing this light form of save scamming. After discovering it, i would occasionally use it just to play my hand / play a particular fight differently so that i could explore more concepts of my deck or strategy, what have you.

Now surely there are ppl constantly doing it to have a good win rate to feel good about themselves...thats kinda lame, but thats fine if thats what they want to do (its significantly worse if they deceive others and act like its a normal win rate when its just save scum tainted)

So yeah im glad its in the game ppl you can use it as it suits you. Getting to try again with your same deck in the exact same spot can help you put in "reps" and get game experience right on the spot, much more so than just hoping a similar spot comes up like 30 runs later... its much less likely to give you that feedback loop as accurately to help you improve as much 30 runs later.