The box I cobbled together from old pallets, dirt is a mix of potting soil and local dirt spiced with chicken poo.
For the more observant viewers, you may notice that the closest 'V' is slimmer than the upper square -- the pallets were a little short. I plan to plant smaller vegetables in those areas.
Absolute bullshit seems a little harsh. Are you referring to evidence that this is actually a thing, or is this just something that someone realized could technically happen and decided it was worth spreading fear and credit for the attention?
Of course stuff could spill on a pallet, but the number/percent of pallets that actually get reused like this as a cross section of pallet loads of stuff that are damaged, with a further cross section of things that are damaged and dangerously poisonous and don't make the wood look or smell odd has got to be in the ballpark of odds of getting hit by a bus.
Just because something is plausible doesn't mean everyone should take the risk as a certainly, just like the possibility of getting hit by a bus should keep everyone on their side of the street.
I agree that it's a bit of fear mongering but it's for a garden that will be growing food for years. To use your analogy, the chance of being hit by a bus when crossing the street is tiny, but I still look both ways because of the tiny possibility that a vehicle is going to run a red light.