Do you think that the FDA should stop trying to make sure our food supply is safe? The contamination could occur at any point along the production chain- from fertilizer (if they are using organic like manure instead of chemical ones) to a farm worker relieving himself in the field because there was no toilet nearby to the processing plant that washes and slices the tomatos (it appears to be only sliced tomatos) reusing contaminated water. WIth modern mass production techniques, it is much easier to spread contaminants than before when smaller amounts were handled at a time. Last year it was spinach.
Contaminations have been around for a very long time- testing and information is much higher now so more is found, identified, and announced.
As a consumer, just wash your vegetables before you use them and you should be fine.