These threats have largely shut up any calls for Biden to go among the elected party establishment.
The "replace Biden" crowd seems to be mostly outside the beltway democrats, the media, pundits, academics, social media influencers etc. The ones that don't live in the DC bubble, have their finger on the pulse of the electorate, and realize what a disaster keeping Biden in there is going to be.
So far, the powers that be in the democrat party, the ones that (might) be able to force Biden to step aside, the Obamas, Clintons, popular democrat governors etc. Seem to be supporting Biden (some pretty tepidly). But unless this group publicly pulls out the long knives against him, I think he is pretty safe, because although the "replace Biden" media crowd can make a lot of noise, they really have little power to do anything.
“I think he is pretty safe”...
until he gets on a WH helicopter...
Lol.
In DC the good stuff is very secret—and sometimes the secret is kept for decades.