It did not increase the risk. At worst, if the article is entirely accurate, we will simply be returning to where we would otherwise be anyway.
Before the green revolution there were a lot of very different wheat varieties around the world. In fact, if my memory is correct, during the selective breeding for high yields one of the breakthroughs came from a thick and sturdy stalked dwarf wheat from Japan. The stalk genes it had produced a stalk strong enough to carry the new large yields.
The point being, we used to have a large variety of geno and phenotype around the world, and now we don't.