There is one massive problem ignored by all those saying Joe could be forced out. Biden is the elected President of the United States. He can’t be forced out except via impeachment and conviction in the Senate, or via the 25th Amendment. His party could refuse to renominate him, but he can’t be forced out of office until his term is up.
No one is forcing him to resign, just drop put of the race.He can be convinced to drop out of the race.