Fuck Pelosi for a thousand different reasons over the course of decades but she was far and away the person most vocally calling for him to step down.
There was two weeks of interviews that basically boiled down to
"The president is running out of time to decide for himself if he wants to step aside and let somebody else be the nominee." - Pelosi
"He has repeatedly said that he has no intention of stepping down and intends to see this election to it's finish." - interviewer
"He is running out of time to DECIDE FOR HIMSELF if he wants to step aside."
Like she's a totally soulless ghoul but she came to grips with Biden being a doomed candidate way earlier than anybody else.
That being said if there was a primary I'm sure she would have worked night and day to make sure Josh Shapiro was the nominee and they still would have ate shit but still.....