Soto is slumping, Gore is surging, Soto is a free agent after 2024, Gore is locked up long term. Soto is expensive, Gore is cheap. Even if the Nats were in win now mode keeping Gore is the right call. The only way that trade works for the Padres is if they win a World Series.
In any case, the right move is to always trade Boras guys when they hit their arb years.