Thanksgiving imo is a holday to give thanks for the harvest (that is why it is in the fall after the harvesting is done). What better time to stock up for the winter than after the harvest? Although I agree that the Canadian version of the holiday may be different than yours and a lot less significant in this country.
Remember that it is a National holiday based on economics to begin with and shopping doesn't seem that out of line.
Remember that it is a National holiday based on economics to begin with and shopping doesn't seem that out of line.