Previously, we've relied on a number of heuristics to determine if something is real or not, such as if an image has any signs of a poor photoshop job, or if a written work has proper grammar. These heuristics work somewhat, but a motivated adversary can still get through.
As the quality of fakes gets better, we'll need to develop better tools to dealing with them. For science, this could, hopefully, result in better work replicating previous works.
I'm quite likely being overly optimistic, but there's a chance for positive outcomes here.
[0]: https://www.science.org/content/article/potential-fabricatio...