The Fourth amendment "protects people from unreasonable searches and seizures by the government". Then, third-party doctrine created by SCOTUS is a loophole for the fourth Amendment. Third-party doctrine says 4A "does not apply to information that is voluntarily shared with third parties".

Section 702 allows to collect all communications between American citizens and non-citizens, and communications between non-citizens, without any warrant. The issue is: does one need a warrant to search any data about a US citizen in 702 collections? Here, the court says it violates 4A.

The federal court ruled otherwise.

I feel that it just forced them to actually folllow section 702 rather than letting them go about things as they liked.

section 702 applies different unconstitutional rules for citizens and foreigners. foreigners have no privacy rights there.

which is per-se unconstitutional, violating postal secrecy. they still think they are in war-times since the 30ies, and can store all meta-data and content in full. they are in war actually with all citizens.