Malarkey. If they didn't pollenate, there wouldn't be a seed to harvest. You can grow the seed but then you've broken the contract you've signed and can't buy the RoundUp or Liberty and end up with sh*t yields thanks to broadleaf weeds, thistles, mustard, wild canola, millet, etc etc and dirty grain come time to sell your crop and you get nothing for it.
Whoever you got that from wasn't telling you the truth.
Weeds steal you moisture, weeds steal your soil nutrients, weeds shade you grains, they choke your roots.
I'll lease you a quarter section, you buy the landrace seed, diesel, fertilizer and equivalent to an equipment and land tax fee and I'll plant and harvest.
How much do you think you'll owe me after selling your crop?
Bacillus thuringiensis - Wikipedia, the free encyclopedia it's the source of the Bt gene.