SCOTUS overturned the Chevron Doctrine, in place since 1984.
This is a very dangerous outcome. People probably don’t understand the impact that this is going to have on how government agencies operate, particularly with regard to those agencies’ abilities to regulate. 
Dozens of issues are now going to be resolved by the courts, issues that would have been resolved by people with substantial expertise and knowledge who work in federal agencies.
In his opinion, Roberts wrote,” …..because agencies have no special competence in resolving statutory ambiguities. Courts do.”
This SCOTUS attack on long-standing precedent continues on debated.
Here’s what you got as a result of that kind of hubris:
Because the “conservative” justices think that they have better medical knowledge than doctors and scientists, they decided to interpret the Roe decision and overturn it. (Dobbs v. Jackson Women’s Health Organization, 2022)
Because the “conservative” justices think that they have better knowledge about environmental science than career employees of the Environmental Protection Agency, they decided to overturn parts of the Clean Water Act. (Hackett v EPA, 2023)
Because the “conservative” justices think that they have a better knowledge of sociology than people who actually work in the field of sociology and civil rights, they decided to overturn significant parts of the Civil Rights Act of 1964. (Groff v DeJoy, 2023)