The report itself[†] blames the pesticide residue on a "boomerang effect" from EU countries: EU countries export these banned pesticides to third countries, those countries use the banned pesticides on the food they grow, and then the EU countries import that food. In effect, EU companies are still profiting off of the sale and use of banned pesticides on food that Europeans will eat.
[†] https://www.foodwatch.org/fileadmin/-INT/pesticides/banned_p...