Bertie the Bunyip writes:

Yeah, right, that's why they spend millions on a six axis motion system

The motion system adds credibility and realism for an airliner. The idea is
not to teach pilots about the sensations, but to provide sensations that make
the rest of the simulation realistic enough to confuse with real life.

This is quite different from using a motion base to teach pilots how to fly by
the seat of their pants (which they must not do in an airliner).