Yani Neko Opening: Refences or Spoofs?

The opening of the anime Yani Neko (Chainsmoker Cat) is packed with references, as can be seen in this video: https://www.youtube.com/watch?v=YEP6hpj368w


But considering that all these references involve replacing characters from the original works with characters from the anime, I was wondering: should they be added as references or as spoofs?