It looks like Smith opened the door both on the legitimacy of the 2020 election and what actually happened on January 6, 2021. From Roger L. Simon at The Epoch Times via zerohedge.com:
Special counsel Jack Smith made a lot of noise on Aug. 4 by requesting a “protective order” against big, bad Donald Trump because the former president posted “If you go after me, I’m coming after you” on Truth Social.

While the request sounds like the usual grandstanding, Smith may actually have something to fear from our 45th president, although it may not be exactly what he intends to convey here.
Indeed, it may be far more significant than mere social media puffery in the end.
The actual 2020 presidential vote results, in which fewer and fewer of our citizens have confidence, have been called to question.
Given the nature of his indictment of Mr. Trump related to the Jan. 6, 2021, Capitol breach, it seems the special counsel has opened the door to putting the 2020 presidential election on trial. Mr. Smith’s indictment depends on proving that Mr. Trump was lying when he said the vote was fraudulent. Well, we’ll see.
The mainstream media and their new best friend, former Attorney General William Barr, assure us these same charges will finally be the end for Mr. Trump. (Other legal minds—notably Jonathan Turley, Alan Dershowitz, and Andrew C. McCarthy—differ.)