Why numerous accounts? One was not enough? 
Rewarding because it’s easy right? And there is no issue with using AI at all. I think you didn’t read or understand the real problem in this topic.
That’s up to you, the end user that uses those tools. And yes, your products will come out better and tastier if you know what you are doing. Mixing AI and knowledge is what makes good products. But again, that is not the real issue since AI is a tool only. Check the topic in detail if you feel lost.
By hinder, you mean trying to protect ourselves and others from wasting filament, eletricity costs and time because what is shown with AI is not at all what is modeled in 3D? Because that is the real issue here.
Picking on your example: You send a picture of a nice yellow Banana to the supplier that will buy tons of them from you. He sees the picture and “wow, i’ll buy a ton of them”, based on what he saw. Instead you deliver rocks and the supplier that already paid for what you showed him and even agreed, based on the pictures, will have to stay quiet and at a loss. That’s it?! Money lost for him but your own pockets full for what in reality is called a scam. Is that what you mean? That is called a scam in my book.
Anyway, a person who states that he has “numerous accounts in the platform” and creates an account with IA in the name (In some languages is AI) just for commenting this topic, is already suspicious enough and from me it won’t have any more attention since it could, and probably is, one of the trolls that had the other topic closed and also came here with his “not his accounts at all” just to discredit other people.
Enjoy your numerous accounts and if you feel like it, please show us your nice and yellow Bananas created by AI 