I am annoyed by Christmas before Thanksgiving, but the change doesn’t seem that egregious, just avoiding the case where it could be a week later than usual:

in 1863, during the Civil War, Abraham Lincoln established the last Thursday of November as the official date for Thanksgiving to be celebrated each year. Following this tradition, every president thereafter declared a general day of Thanksgiving to be observed on the last Thursday in November. However, in 1939, during the Great Depression, November had five Thursdays, and the last one fell on November 30, which left little time for the Christmas shopping season. To address this concern, in August 1939, President Franklin D. Roosevelt decided to break from tradition and issued an executive order declaring that Thanksgiving would be celebrated on November 23 instead of November 30.

Also it didn’t work:

A 1941 Commerce Department survey found no significant expansion of retail sales due to the change.