>>2003
Tanya was given her trial not because of any character flaw, but because he lacked "faith in God." As being X states, there are too many people around to maintain any that act like NPCs. Tanya's last incarnation isn't a quest to develop his character or morality, but a last attempt to awaken him to reality and turn him into a conscious, worthwhile existence.
God doesn't make any distinction of what his power is about to be used for when his power is invoked, whatever Tanya's will is, it is just by virtue of that invocation. It isn't an appeal to something external, but to the Creator's power itself, authorship over reality. Tanya is given access to it in the most direct manner possible, yet refuses to use it, simply because he sees that creative power as something foreign. Whatever authored the world as it is, a place where the strong eat the weak, is despicable in his eyes, while he himself contributed to its state as an implement of that cycle. Tanya refuses to acknowledge his own responsibility as a conscious being and effective originator of reality, and instead chooses to oppose it. He wishes to fight God's will, so an avatar of that conception presents itself to be fought as Mary Sue, exactly as he conceives it: a hypocritical, despicable being, unduly granted ultimate power. Tanya fights himself the entire time by refusing to use the power of God, his own power, at will to submit everything to his will.
There are two options left for him: transcend and become God, accepting responsibility for reality, either accepting it as it is or transforming it, or sever himself entirely and fade into the void. NPCs can be simulated, there's no need for conscious people leading sleeping lives.
>>2009
Both factions back then, and the many factions now, are wrangled and controlled by the same peeps higher up. It was as much a willing setup to ensure WW2 would go as it did, as it was an earnest internal struggle. Many decisive points in the eastern campaign were clearly manipulated to prevent what would've otherwise been an easy victory.
>>2021
The evil spirit thing might be somewhat correct depending on what kind of evil spirit you're talking about. Most of the ones normies encounter are just parasitic thoughtforms, created from a pathology of the mind, and sustained by it. Psychic power being the result of ignorance and delusion is also partially correct, but for anything useful it's conscious delusion and ignorance. If you're not absolutely focused on the magic you're working, if you pay mind to concepts contrary to it, such as determinism, you won't get far.