Freese was the MVP of both the NLCS and World Series. His OPS was 1.2, set the postseason record with 21 RBIs and has big power.
Molina's OPS was .7 and he doesn't have real home run power, not to mention the fact that he's probably the slowest player in MLB. That means if he hits the ball to any infielder, he probably can't leg out a hit.
The last 3 times Freese was at the dish with a chance to make a difference, he hit a double, a triple, and a home run with 5 RBIs, 2 game tying RBIs, and a game winning RBI. You'd pitch to that guy with first base open?
Washington made the right call, his pitcher let him down.