That would fall under the “then God is not good/not all loving”. You described it as if it were a privilege, but the capacity of evil causes indescribable suffering to us and to innocent beings such as small children and animals. If God lets all of this happen just because he wants some replicas of himself or because he thinks it is such a gift to be like him despite it, he’s an egotistical god.
Also, if he gets bored of pure goodness, blissfulness, and perfection, then it was never pure goodness, blissfulness, and perfection for him. Those things, by definition, provide eternal satisfaction. So he either never created that (evil branch again) or he cannot achieve those states even if we wanted to. If he cannot achieve those states even if he wanted to, if he lacks enjoyment and entertainment and has to spice his creation from time to time, then he’s not all powerful.
Also, many people argue the necessity of evil as a requisite for freedom. If God needs to allow evil so we can be free, then he’s bound to that rule (and/or others): not all powerful.
We don’t know if evil is relative, but you can follow the dilemma with different wording.
We don’t like our wellbeing and our ability to make our own decisions taken away from us. We suffer, which is something we want to avoid in general terms. It goes beyond humanity, as many animals also seem to seek the satisfaction of their will (being it playing, feeding, instinctively reproducing, etc.) and seem adverse to harm and to losing their life.
So… If we are such creatures, it’s natural we don’t like situations and beings that go against this. We don’t like volcanic eruptions when they’re happening with us close the crater. We don’t like lions or bears attacking us. We especially don’t like other humans harming us as we suspect they could have done otherwise in many cases. We simply don’t like these things because of our ‘programming’ or ‘design’.
Problem? There are a few. The first is God asks us to like him when he’s admitting that he is actively doing the things we dislike almost universally as human beings. That makes us fall into internal conflict and also into conceptual dilemmas. Perhaps due to our limitations, but nonetheless real and unsolvable to us.
Then you can argue that the way we are is designed by him, so why design something that is going to live, feel, think certain things as undesirable and then impose such things unto them? Let’s say I cannot say that’s evil, I at least can say it’s impractical as it will certainly cause trouble to his mission of accepting him (and following him). If that obstacle for us is part of the plan, that’s not for me to say, yet it is an obstacle in our view and experience. In human terms, all this might be classified as unfair or sadistic*, which is the reasoning in the guide and how you can follow it in this perhaps closer way.
Now, about this last part, while we can argue that *those terms arise from our own dispositions and might be different to other dispositions (aliens that do not experience pain, for example), is that enough to invalidate our perspective? Then what’s the place of empathy, which I am assuming is also a part of God’s gifts to us? What’s the place of compassion, as written in many religious texts of supposedly divine inspiration? If we need to carry our dispreference, displeasure, dislikeness—suffering—and not to classify it as necessarily evil when the gods impose it to us (as it is our judgment only), then why classify it as evil in other circumstances?
I hope I am getting my new point though. What this all seems to conclude is that if the lack of respect for the suffering of the animal kingdom is not worthy of being classified as bad (for whatever reason, here I argued that because this comes to be only by our characteristics/disposition); if, therefore, we cannot say a god is evil for going against our wellbeing and against our ability to make our own decisions, then I fail to understand many other things that tend to follow religious thinking and even moral thinking.