Lots of wasted but necessary effort. Biden is not a viable candidate and the dems fully realize this. The dems will wait to make sure none of their Wuhan plague smear of Trump splashes onto Cuomo before giving him the nomination.
I think Trump has enough juicy details on how Cuomo screwed-up here that this is not going to happen. Cuomo is demurring for a reason, and it isn’t lack of ego.