Yeah, super delegates. That's been a thing since 1972. It's not new.
What is new; the super delegates don't vote until the second round. Which only happens if there isn't a majority winner in the 1st round. Under the old rules, the super delegates could vote in the 1st round.
So, if RFK had 80% of the primary delegates, he'd win the first round. If he had 60% he'd win the first round. If he had 52% he'd win the first round. If he had 50%+1 he'd win in the first round.
The super delegates wouldn't get the chance to vote. So, this 80% claim is trash.
https://ballotpedia.org/Democratic_delegate_rules,_2024
From Ballotpedia:
In 2024, there are an estimated 4,514 delegates: 3,770 pledged delegates and 744 automatic delegates—more commonly known as superdelegates.[1]
To win the Democratic nomination, a presidential candidate needs to receive support from a majority of the pledged delegates on the first ballot: an estimated 1,886 pledged delegates.[2][1]
If the convention is contested and goes to a second ballot or more, automatic delegates—commonly referred to as superdelegates—are able to vote and a candidate must receive majority support from all delegates—2,258 votes. Previously, superdelegates were able to vote on the first ballot. This rule changed after the 2016 presidential election, when the Unity Reform Commission proposed several ways to reduce the number and power of superdelegates.[3][4] To learn more about the 2020 Democratic National Convention, click here.