It sounds to me like it's maybe a conflation of two ideas--one, the idea of the genetic engineering which goes into any plant/ cultivar that humans have a hand in generating; and two, all the pesticides that many plants in big box stores and even some nurseries are drenched in before they're sold, so the plants are actually harmful to the pollinators that land on them.
I think the first is not harmful to pollinators, but I've heard some reports that cultivars may not always attract and provide nectar for pollinators as well as the straight species does, especially when it comes to natives.
The second practice is definitely harmful to pollinators, but is unrelated to the issue of whether a human was involved in creating a plant or cultivar.
well, just my thoughts.
