Point of clarification: The Nuclear Regulatory Commission will be holding a public meeting, not a public hearing.
In a meeting, there is no test of truthfulness. In a hearing, everything the NRC says in under oath and on the record. NRC regulations require the agency to come hold this one public meeting on the Post-Shutdown Decommissioning Activities Report.
However, whenever NRC licensing actions involve nuclear reactors, as is the case at Entergy Nuclear Vermont Yankee, an opportunity to file requests for a hearing and to file a petition to intervene comes with that licensing action.
Each time Entergy requests a license amendment or exemption from regulations is an opportunity for the public to challenge that action with all parties under oath.