I don't think there's anything wrong with drawing inspiration from something, and the only thing I see in common here is the concept. There's no fighting to make someone put on glasses, no busting into a bank to shoot up hidden aliens/demons, though there IS the whole world reveal at the end.
Honestly before I knew it was They Live inspired, I was drawing bible-inspired parallels (invisible demons rule the world.)
It's "They Live if demons did it" which I can dig. And I personally don't believe there are any ideas or concepts drawn from a vacuum.