I see a lot of people claim the training model included copyrighted works particularly books because it can provide a summary of it. But it can provide a summary of visual media too, and no one is claiming it’s sitting there watching films.
If the argument is it has quite a detailed knowledge of the book, that’s not convincing either. All it needs is a summary and it can make up the blanks, and get it close enough we can’t tell the difference. Nothing is original.
If it’s not built to code to code it can pose all sorts of safety hazards to your neighbours or future owners of your property. If you don’t bother getting approval you didn’t bother building it properly either.
At the slightly more silly end, your shed could lower the value of the neighbours property (because it looks like a meth lab, or just a general hillbilly grotto) and the law holds financial harm higher than physical harm most of the time.
Edit: also it’s not just you, it’s any meth head who decides to build their own shed. Laws need to cater for the lowest common denominator.