Think the point is that there’s no good option known and an overly short runway to build momentum, and the likely option would be Harris, and she’s already the default option.

Instead of “Biden should step aside”, the calls should be more specific in what they affirmatively do want.

Same with rhetoric about “just any third party”, that’s so vague that no one should want that, as third parties are very different and in opposition to each other.

So calls for ‘not Biden’ or ‘just any third party’ are utterly useless except for screwing up chances for a D win, without any particular actionable agenda being advocated for.