You don't need to have a team of 80% free throw shooters to win in the playoffs. Shaq was a poor shooter and his team won 3 in a row and people even intentionally fouled him. Shaq had the ball in his hands a lot. Jakob is a starter, but on offense, he has a limited role. He doesn't have the ball in his hands and he doesn't go to the line. They don't need him to be that kind of player. They can win with him in the playoffs as a starting center, especially one that touches the ball way less than a star like Shaq. If we relied on Jakob to be a 20 point a game scorer, then yes, free throw shooting would be an issue, but that's not his role on this team.