Apportionment decisions and site search. Small change of jurisdiction - big effect?

Sometimes things are rather unimpressive. This certainly cannot be said in its entirety about the Location Selection Act (StandAG). This is shown impressively by paragraph 1, in which the purpose of the law is described in no less than six paragraphs. paragraph paragraph 30 et seq. regulate the procedure for determining the levy amount as well as for collecting the levy and for the advance payments to be made by those subject to the levy. These provisions have essentially remained unchanged. The only major change is that the Federal Ministry for the Environment, Nature Conservation and Nuclear Safety (BMU) is now responsible for the determination and collection of the determined levy amounts. But what considerations are behind this transfer of responsibility to the Federal Ministry?