Don't you think that we are extremely tired of seeing French vandals --again-- assaulting and destroying Spanish fruit trucks while the gendarmerie just watch the cargo burn?. This people is attacking legal EU companies and the French police act as necessary accomplices that allow it. French government couldn't care less; they even do jokes on TV about it. Is the same stupid stunt since 70's, each time they need a scapegoat to divert the attention.
Do you think that this will increase the appetite of Spaniards for French products in the near future?. I seriously doubt it. Each action triggers a reaction
Second. Quality controls on EU is not a new thing. A lot of people works detecting and stopping dangerous products since decades. Thousands of this products are silently stopped and removed each year so, why do you think that this is suddenly breaking news? Have you heard about the recent scandal of Spanish strawberry farmers stealing water and sucking dry the Doñana National park?
What you are suggesting is to use coaction, blackmailing, to stop analyzing imports into the EU, or to hide the results, that cross the EU's southern borders.