Falling drones and cars "parked in the Bay of Puck". Something is interfering with the GPS signal over the Baltic Sea

Drones falling into the water or crashing into trees and maps that show that cars and bicycles are "parked in the Bay of Puck". Something is interfering with the GPS/GNSS signal in the vicinity of Hel and the Tri-City. As specialists explain, it can be the alleged spoofing. But who does it and why? There are respective hypotheses.