Because you are claiming that mods, and by proxy, the ones who make mods are evil and anyone that supports them are supporting a major problem in the game industry. In terms of immorality, pirating a project is more immoral than supporting a mod maker. That is why I brought it up. I would only agree that modding is bad, if it was paid modding, like the fiasco of Skyrim paid modding on Steam. Now that is something I do not support.
I'm not sure what you are referring to. What problem did I raise about mods and patreons?
Modding serves three purposes: 1) To fix an already broken game (ie Skyrim), 2) To add in content that the developers won't do, 3) To apply balance changes to make a game easier or harder / more immersive or more streamlined. There isn't enough of Wildlife to make the assessment for #1 or #3. However, more content, or more UI options, or fringe fetishes for those that want them, would only be beneficial to Wildlife. All games do better with modding, compared to games with no modding at all. Do you really think people would have kept playing Skyrim, if it lacked modding support?
Sharing which Assets? Any sound, art, animation, or anything except code, automatically is their intellectual property. If someone takes it, it is stealing and is more often punished by law than product piracy is. As for code, UE4 doesn't let you have access to compiled code assets (ie anything made with C++) and only allows access to Blueprint Scripting. If they did the majority of Wildlife's code as compiled code, a modder wouldn't have access to it. UE4 will fiercely protect developers and their assets, so it is not advisable to steal stuff from UE4 developers. If it was any other company, you might get away with it (ie stealing CryEngine assets from a developer making a game on CryEngine).
What about supporting Unity developers? There is some interesting Unity porn titles in development, such as, Viktor Black creating The Last Barbarian? I can understand not supporting VN or RPGM style games (though that one in the Fallout universe looks promising)