You keep returning to Bernie, as if he were the first to point out the flaws in the super delegate system. In 2008, when the super delegate system was NOT working in her favor, Hillary said:
As Clinton said in 2008: “I do think we’re going to have to look at [the nomination system] because the primaries have been incredibly exciting for people, so I think we need to figure out how we can have a process that reflects the desire of the voters.”
It's called opportunism and it is a common trait amongst politicians.