Personally i think "one" of the worst things that can happen to a garden is spider mites. I think it depends. anyone can grow a plant. but if your not careful or get lazy then you end up with Mold,bugs. So it depends, Are they going to, feed it right, dry it right, store it right. I imagine depending on their climate they could end up getting lucky when drying it for their first times. Or, they could ruin a house with mold and water damage, or worse die in an unintentional fire while they are asleep. In hydroponics not only do you have to get the ventilation,a/c, light right but you also have to worry about pH,ORP,EC, Water temps, microbial control. But i guess with enough money you could hire people for all of that
Ive actually built dosing pumps, pH controllers, wireless dimming modules/controller for light drivers. Timer modules that have the utmost control. Everything can be graphed over periods of time and analyzed for problems. i could literally tell when plants are ready for harvest because of the changes in ph and nutrient salt consumption. You can look and say hey they are done eating everything has flat lined for the past week