Comment: I think my reasoning is sound

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I think my reasoning is sound

He was, according to his manifesto, lied about, falsely accused and fired years ago. He has harbored racist anger from his childhood. He compiled and published an 11 page manifesto. This does not look like a sudden decision and the fact that he is still at large indicates that he did have a plan.

The longer he stays at large the more credence it gives to the probability that he is receiving help. From whom we couldn't know and that is why I say "probably" when I name an anti establishment group that "may" be sensitive to his cause. But it could just be certain individuals who are part of no group at all.

You are right that it is all conjecture but it is far from wild.