Lmao no. "The estimated amount of refund fraud" + "off the shelf AI can generate and edit photorealistic images" adds up to "refund fraud with AI generated images" by default.
There are enough fraudsters out there that someone will try it, and they're dumb enough that someone will get caught doing it in a hilariously obvious way. It would take a literal divine intervention to prevent that.
Now, is there enough AI-generated fraud for anyone to give a flying fuck about it? That's a better question to ask.