"This product seems to simplify the entire process of home growing,"

Eh, it can be difficult. The most difficult part is sterilization and inoculations/transfers. This doesn't help with that. You can literally hook up a mister to a timer to get the same effect (I know, I've done it as a newbie).

But I agree that people will buy it, as they do many things that aren't truly necessary (doesn't bother me).