It was the poultry industry that pushed for it. If it follows the pattern of other such regulation, it will be all paperwork and no action.
edited to add, welcome to BYC
further edited to add, there are hardly any APHA inspectors, and I cannot see them hiring enough newbies to add visits to all newly registered backyard keepers with 1 or more chickens in the garden (can you imagine what inspectors used to dealing with sheds of 30,000 think of this development?). Yes, it will put some people off keeping chickens, but it's really not a big deal when you get down to it, and if you inform yourself of what the rules actually are, rather than rely on headlines and witless / scaremongering on social media, you find they are not nearly as bad as they are often assumed to be.