This is a silly decision. I don't respect the reasoning at all.
If Republicans want to abolish the EPA, all they have to do is pass a law. They could do it with a simple majority in each House if they abolish the filibuster (which itself requires only a simple majority).
There is no meaningful loss of democratic control here. Congress can do whatever it wants, with or without the EPA.
This is just the highest court in the land acting as toadies for the fossil fuel industry, legislating from the bench on a flimsy right wing legal theory.
For a law to be passed in the US, it must be approved by the House, the Senate, and the President. For a law to be repealed in the US, the repeal must also be approved by the House, the Senate, and the President. So there will often be situations where it matters what the current law is - whenever these three components of the system do not agree, so that the current law will not be changed. In such a situation, it is not supposed to be the case that the President (in control of the executive branch) can unilaterally decide that the current law is whatever they want it to be.
If Republicans want to abolish the EPA, all they have to do is pass a law. They could do it with a simple majority in each House if they abolish the filibuster (which itself requires only a simple majority).
There is no meaningful loss of democratic control here. Congress can do whatever it wants, with or without the EPA.
This is just the highest court in the land acting as toadies for the fossil fuel industry, legislating from the bench on a flimsy right wing legal theory.