Because these files are "repacked" by unknown third parties, they can be injected with malicious code designed to track user data or steal login credentials. Instability:
Crunchyroll (now owned by Sony / Funimation Global Group) pays massive licensing fees to Japanese production committees. These fees pay the animators, voice actors, writers, and directors. When you use a cracked IPA, you are not “sticking it to a billionaire”—you are taking revenue away from the studios that make One Piece , Jujutsu Kaisen , or Sousou no Frieren .
While the repack promised a world of free anime, it lived in a gray area. Because these files are distributed outside the official Apple App Store, users have to "sideload" them using third-party tools. This comes with a set of invisible dangers: