This is the way it always was back when our primary means of communication was verbal and hand written. Everyone knew anyone could lie. We then had this bizarre period of time when you had certain types of media, especially photographs and video, that were extremely hard to fake convincingly. That period is now over and we have returned to the norm: you can't believe it unless the provenance of the information is known and the chain of custody is trustworthy.
This needs to be drilled into people starting in elementary school.