In terms of realism, how realistic is this portrait of a family sitting down to a happy Thanksgiving Day meal? Is it possible that this is more of a fantasy than a reality? Is it possible that this...

In terms of realism, how realistic is this portrait of a family sitting down to a happy Thanksgiving Day meal? Is it possible that this is more of a fantasy than a reality? Is it possible that this painting might serve as propaganda for family values? How would that aff ect its value as a work of art?