Not sure if your serious or joking about what you know but countries have laws about spying on their own people but not as much non citizens and foreign locations. They don’t have laws about not sharing information about their citizens from a foreign government. So these kind of things allow them to bypass their internal privacy laws.
Why? What could the EU gain by giving personal data of its citizens to a country that illegally eavesdrops on them?
Not sure if your serious or joking about what you know but countries have laws about spying on their own people but not as much non citizens and foreign locations. They don’t have laws about not sharing information about their citizens from a foreign government. So these kind of things allow them to bypass their internal privacy laws.