I'm not saying that Bernie is actually or should actually be winning. I'm saying that many Sanders supporters feel like the system is stacked against them, and changes in the delegate count that favor Clinton (even if these changes are just reverting the delegate count to what it originally was) are seen as more evidence that Clinton is "stealing" the nomination. Is it rational? No. Is it important to understand how they feel? I'd say yes. These voters are the kind Hillary has to win over in the GE. I've accepted that Hillary has won the nomination, so I fail to see how this makes me a whining kid.
OK, but saying on the internet this stuff is not going to do a damn thing. It looks like whining. I get it, some of them feel wronged in some way. They can get over it. Life for one thing isn't fair. They are not going to win everything in life. If they can't understand that, they can screw off. If they want to throw the election to Trump, they can face the damn consequences.