Think, even those with a little contamination don't contain pesticides and can truly be called organic.
We get contorted plants in our garden from [herbicide] spray drift from surrounding agriculture [in Spring before the boundary hedge is properly in leaf], so I wouldn't be too sure about no pesticide contamination - I I perceive that part of the problem is having no way of knowing if something was sprayed in the field behind the day before ... all depends on each person's paranoia I suppose.
Just yesterday Mrs K and I had a conversation in the car about making more effort to grow more of our own to know its provenance ...
I believe that Potato haulms are "desiccated" before harvest, in this country, using acid but abroad still using Gramoxone (banned in the EU for half-a-dozen years or so) - if I buy a bag of spuds at the farm gate they might actually have been imported and contain traces of Gramoxone (or gawd knows what ...). For many years we haven't bothered to grow main crop to store because they sprout by Christmas ... going to change that policy.
We eat, in the main, only crops that are in season. We are going to be more rigorous about that, so that we will eat out of the garden rather than weakening and buying a punnet of flown-in-strawberries in mid Winter (and then regretting it as they taste of nothing ...)
But we are definitely going to reduce, to as close to nil as possible, all foreign fruit and veg purchases, and be very selective about what UK food crops we buy. I can see how people decide to pay extra to only buy Organic ...
The conversation ended up with Mrs K asking "If you had another greenhouse could you grow Peaches and the like? We have far too much veg in the greenhouse and not enough fruit. What about Kiwi's too?"
Now I know the economics of this are not good but ... Hey! ... as a project it sounded good to me
. On Beechgrove (TV) they have greenhouses for all sorts of fruit, and they are a long LONG way North of me