From the article, Americans eat 55 million pounds of fish sticks per year, so Americans eat on average 1/6 of a pound of fish sticks per year, which is like... on average half of Americans have fish sticks once a year? That hardly sounds like a staple. Compare to, the average American eats 222 pounds of red meat and poultry in a year.
https://www.seattletimes.com/business/americans-meat-consump...
Edit: for another random entertaining comparison, Americans consume about 2 pounds of asparagus each, every year. So about an order of magnitude more than fish sticks. https://www.agmrc.org/commodities-products/vegetables/aspara....