The only way you really fail in with anti cheat is by giving up. With UE5 there will be more possibilities for anti cheat. As software matures things get better.
Taking a guess but even primitive themes could have fantasy creatures in them. It's a reasonable guess. But maybe untamable? Guess we will have to wait and see! So exciting.
They are awesome and cool. They also are rare to find. You can get some pelt from them so I guess it could be useful but honestly who would not want a sheep ?