I think you’re reading too far into this. The movie was pretty well written and was about equality and acceptance (which is a huge value these days so why not utilize that to make it evermore popular). Unless you have any articles or other information to back up your strange conspiracy. I don’t want to hear any more about it.
A miniscule fraction of government budgets to emergency stockpiles for the ENTIRE population and their dogs (for security and morale) could prevent a democidal holocaust come 'The BIG GLITCH' and 'The Great Culling'. Instead, they use massive government funds to provide for themselves and the few they find useful in the aftermath. Also, they arrange funding for pop-entertainment propaganda, massive blame-shifting and projection onto the regular people they have set-up and consider useless eaters.