https://nationaltoday.com/national-french-fry-day/

Then your country is twice as stupid as I thought, because you have a national holiday to French fries, and you called them French fries out of idiocy:

“Let us return for a moment to the horror of the First World War. Europe struggles under the occupation. British and American soldiers finally push back the Germans after a hard-fought battle in the trenches. A lot of hungry mouths to fill. At the Belgian front, the soldiers learn about chips. Due to the chaos and confusion, and because they hear French words being used all around them, they accidentally assume they are in France… Result: another adjective that will forever define the international image of our snack. ‘Tastes good, let’s call them ‘French Fries’ folks!’”

https://www.compass-group.be/en/stories/french-fries-are-a-belgian-invention