Yes, the people saying this is no big deal I think have failed to notice that SCOTUS just overturned a major previous SCOTUS decision that has stood for over 40

Yes, the people saying this is no big deal I think have failed to notice that SCOTUS just overturned a major previous SCOTUS decision that has stood for over 40 years and which is going to have a massive influence on a large category of class action lawsuits in the future. That this is understood to be an important decision is verified by the stock market response which was to immediately go into freefall. The reaction was swift and not anticipated in advance by market uncertainty because this decision was a huge surprise since no one thought they had the votes, the assumption being that conservative Kavanaugh would side with the conservative majority on issues of unquestioned corporate power. This may be an indicator that in many other cases involving corporations there exists a SCOTUS majority that will be overturning other past decisions and in general not be automatically deferential to business interests.