If you're only concerned about the ethics, then if no exploitation is required to make this kind of product, then it's fine to eat this. If you're not concerned about the ethics, then it's a no-no.
I don't know, I'm asking you... If it is bad, then the question is of course why it's bad. Is it inherently bad, or is it bad because it's made without proper care?
Perhaps because they're cheaply made crap? The question is: Do artificial preservatives have to be bad for you when they are made properly?