They know that its not possible to move Biden out and re-install Trump.

Even if election fraud is "proven" from these investigations (even though it was already proven through the evidence they willingly ignored previously) there is no procedure that says Biden has to move out and Trump goes back in.

Basically "oh well, its already too late since Biden was already certified"

This is why it was important to do this stuff before the electors cast their votes and before Jan 6th.