The fallacious line of thinking that one can fully isolate an outdoor planting is the more interesting issue this touches on, a skeptical take is that this fallacy continues to exist in regulation only for its utility of abuse by large companies seeking to profit from the commercialization of sterile GM crops.
I'm sure the upper echelon of commercial weed growers typically have a far higher education in landscape ecology than the captured regulators.
I have been trying to quit, we finally cut up the plants that we had from last year and put them in jars and sent them away but then somebody shows up with a jar of something they grew.
I don't think I'll ever buy weed from a dispensary because between being able to grow a few plants for myself and getting weed from friends who also grew it for themselves as well as knowing people in the industry (leaders in the trade association) it keeps showing up.
Who thinks that? It is about reducing unwanted pollination. So if you know the wind will come strong from this area and lots of hemp field are there, you can maybe protect your plants some time of the year, or know beforehand, that an area is not a good spot for you.
Most corn is also patent encumbered, but that is less of the reason.
Soybeans are actually different and before all of the patented genetics people did sometimes replant their own grown seed.
They will not only "not sue", but they will compensate you for the cost of the contamination.
The only court cases where Monsanto (now Bayer) got damages involved farmers knowingly and intentionally replanting Monsanto's seeds.