without the person lifting a finger.
I used nothing but free-license images and the public domain
Soo, you did not lift a finger to create the images yourself, like you give as advice: then finish it by making your own images for the cards.
This is what irks me in discussions about AI. The inconsistency. If you are against AI because of X, you would have to be against other things involving X. And if it would be pointed out that X is actually not a major factor, you would even have to change your opinion or be a hypocrite.
That particular argument would be, that using ai is akin to not lifting a finger. But using public domain images is lifting even less fingers.
People not liking ai very much is demonstrably true. There are surveys about that kind of thing. It is a valid argument to not use ai. But if you qualify it by things like low effort, you water down your argument. You make it vulnerable to things like the low effort actually not being true in context. One can put a lot of effort into using ai, and using public domain assets would be even less effort.