This summary is not the rule. The rule text controls.
When someone files an interpleader case, they're basically saying "I'm holding onto property or money that other people are fighting over, and I don't want to pick sides." If that person admits they owe the money or don't own the property in question, the court can step in and require them to hand it over. This might mean depositing the money or property with the court, or posting a bond to guarantee it will be available later.
Once that deposit or bond is in place, the court can hold a hearing with everyone involved. After that hearing, the court has the power to let the person who started the case off the hook completely. This means they no longer have to worry about the property or money anymore, and they can step away from the dispute entirely.
This happens before the court even decides who actually deserves the property or money. In other words, the court can free the neutral party first, then take its time sorting out which of the competing claimants actually has the rightful claim. This protects the person or business holding the disputed property from getting stuck in the middle of a legal fight that isn't really theirs.