No, they don't want it both ways. The Leftists do not have ANY moral code, so there is no behavior they can be criticized for. However, as Alinsky taught: be sure to excoriate any conservative who fails to live up to his own high moral code!
(BTW: I'm NOT implying Betrayus/Betrayher/Betraythem is a conservative.)
I know what you mean. Dems do not have any standards so therefore in their minds they cannot be held to any.