Republicans are having a similar discussion. Trump won once and brought people to his side that would not have usually come, largely because of his populist positions on trade, immigration and China. But the truth, the quiet thing that Haley and De Santis don't want to say out loud is that in his case, Trump's petulance and arrogance will not bring suburban women back to the R side of the ballot, not in enough numbers to defeat whatever candidate is on the D side.
With Biden, the quiet part is the fact that his strength was largely not being Trump. Peel that back and you have an elderly man in early stages of dementia with limited control of his emotions, a lifelong habit of racist and sexist comments and actions, and dwindling energy for one of the most demanding jobs on the planet.
Here's what I meant: can Biden realistically win against anyone but Trump? If Trump is the Republican nominee, Democrats can run a box of tampons with a D stamped on them, they'll win. If Trump loses the nomination, not sure a synthetic candidate like Harris or an incompetent like Buttigieg can win. They have to get lucky and hope another unlikeable like Cruz or Pompeio win, otherwise, Democrats will need to be more creative than Biden.
My guess is that reinstating Trump on social media is part of a broader effort to rehabilitate him so he'll be the nominee again. Wouldn't be surprised if Democrats start donating to MAGA or if you start seeing Trump on network television again too.