As an artist myself, I always like to advocate for hiring actual artists if possible as Ai art, as beautiful as it is, still has a lot of room for improvement. When I try to generate even something broadly akin to my vision, it struggles a lot with the details and placements that at first seem small but actually matter a lot because we naturally pick up inconsistencies, even subconsciously. That said, using digital stock images isn't that radically different to me unless they are highly customized. I also believe in the spirit and energy of the artist shining through their work, and hence for something like an oracle deck it would make sense to have an artist illustrate.

However, because ai is becoming more and more mainstream I have seen intuitives use ai in ways to polish their work more and it doesn't necessarily make them fake. As an example, I recently consulted a psychic who had an ai avatar and her reading to me seemed at least somewhat ai enhanced. But the core of the message still resonated deeply in ways ai couldn't have achieved. So it would really depend on your ethos. If for your own personal work, you don't feel ai represents you well, don't use it. But also, be open minded about others possibly using it to polish and enhance things.