Biden is exceptionally good at retail politics. He can sit down at a table at a diner and make anyone feel like they’re seeing an old friend. He would also set the minds of so many older Democrat-leaning voters (many who voted for Trump but would be open to a non-socialist candidate) at ease. He’s the friendly candidate, the elder statesman, the voice of reason in a world gone insane.
All of those qualities are going to turn out to be liabilities for him in this political primary landscape. The organizers and activists don’t want any of that, and Ole Joe has never been good at large scale organizing, which is why he was successful in small state Deleware and a failure nationally.
The base has run out of patience with Old Guard people like Biden. For years they have been promising socialism but failing to deliver. The Base wants their FREE SH** and they want it NOW! Anyone who they feel is all talk and no action will be kicked to the curb, and that includes Biden.