Regarding the tomatoes and the peppers, when they "borrowed" the photos from my site it clearly stated that the fruit was grown in the greenhouse, hydroponically. A person purchasing the seed should have a reasonable expectation of getting the same results as shown in the photo, which in all likelihood they may not.
On two occasions I have been contacted by seed companies asking permission to use one my images. On both occasions, I gave permission for them to use the image and said: "thank you for asking". It is a common courtesy to ask permission before using someone else's property. The guy claiming to have grown the tomatoes using aquaponics was clearly misleading his customers.