The big difference between the 2016 and 2020 presidential elections is that this time, mainstream media outlets are mostly not taking the bait on a dubiously sourced set of digital materials associated with the Democratic candidate.
Outside the rightwing bubble, the exceptions are disproportionately connected with Australia: Australian writers, Australian outlets, and/or outlets associated with News Corporation, who, like its founder, has Australian origins.
Anyone who reports on leaked digital materials, as I have, knows that it is trivially easy to fake, modify, subtract from or add to, and otherwise mess around with any documents in any cache. Some documents carry indelible marks, such as any emails that are signed with DKIM security signatures, but everything else can be messed with.
In this case, we haven’t seen the originals, just PDF printouts, and the New York Post has not been forthcoming with any detailed or satisfactory account of its own authentication process. It hasn’t said how it determined the authenticity of the cache as a whole, or individual items it has reported on, and has continued handwaving about the FBI subpoena, and the lack of denials from the Biden camp.