This is comparable to Citizens United in that it completely upends legal process. Congress passes laws but can't foresee every application. Government relies on expert opinion. This hands it over completely to federal judges and Extreme Court. Food safety, public health, pollution control, auto mileage standards, school performance. Name it.
In his opinion, Gorsuch confused nitrous oxide, laughing gas, with nitrogen oxide, commonly called smog, five times. Yet he will make decisions, not experts. Just like he makes decisions about women's pregnancy.