Hypothetically, they should be POed. Biden is President and should be the leader in US foreign policy. Putting it simply, Biden can't be that leader, because mentally he isn't "all there". The Dems knew that 2 or more years ago, and that he was slipping before then. They could have 25th-Amendmented Biden out of office, replaced him with Kammie, and given her Presidential prominence, but for various reasons did not (the reality of Kammie probably being one reason). A consequence of that choice is that Biden, probably knowingly, is deferring foreign policy to some degree to President-elect Trump. POed Dems are, IRL, POed by their own Biden-or-Bust choice.