Yes, nameless is not a great candidate.
Newsom is a non-starter because of Kimberly Guilfoyle. The lies she would tell about Newsom would take weeks to refute.
And then misogyny, racism, and homophobia make the clear path to 270 for Harris, Whitmer, Booker, Moore, and Buttigieg a little murky.
Misogyny and racism are probably the reason some of calling for Biden to step down. They aren't thinking that he's unelectable. They are worried that he won't make it to 2028, and Harris will be President.