AI works with huge repository of a documents. Probability that you will be able to fake document based on all details so precisely to be undetectable, is extremely low. It is about use of correct font (many companies use fonts which are not available to the public), sizes which have to be exact to 0.01 px, spaces, formating...
Many people incorrectly believe in their geniality. It is harder and harder to play out a system. I do not say that it is impossible. It is still. But you need to spend as much time, energy and money to be safe, that it does not make a︀ sense any more. Cheaper, easier and faster is to find a way how to obtain︁ original documents.
Does it make a sense to do not sleep quietly in the night︂ for next 10 year to save a few bucks?