Has the burden of proof flipped yet for you? At what point must we assume that any given piece of content is AI unless proven otherwise?

It has occurred to me that we are swiftly approaching, if not have already crossed, a point where a majority of all content is either partially or entirely generated using generative AI. At this point, the burden of proof must shift, and we must assume that something is AI unless proven otherwise, rather than the other way around.

How much longer will it take before we have to switch from asking, “Is this AI?” to asking, “Is this real?”