Nah. They are simply giving more power to Trump, power that he did not used to have and should not have. That is it. Supreme court is are advancing their own ideological goals and rewriting parts of constitution they don't like.
The reason this house of cards was necessary in the first place is that the American government does not want to grant foreign citizens the rights necessary to ensure the privacy guarantees the EU requires.
American courts deciding that institutional independence is bad now is awful for American citizens, but it's not supposed to be very relevant to the EU like this.