Sorry if you have a hard time to differentiate what RAW is and how the PSR affects this.
BoED can at best only create rules for "evil" in context of "exalted" characters (which would be a specific exception), cause that's the topic of the book. Exalted, not evil. The PSR creates structures with books and topics. If you ignore this, than your interpretation becomes RAI at best and ain't RAW anymore.
So, if you want to know if poisons are evil, the sources to consult should be:
1. general alignment rules (the primary source for alignments in the PHB)
2. possible specific "evil" rules (anything mentioned in the BoVD)
3. possible even more specific poison rules regarding alignment (anything mentioned in the DMG Poison section)
What buffs me the most in our discussions between the two of us here is, how you are sole presenting your opinion without any logical argument (e.g. "I can't agree with this", so yeah what is your interpretation of the situation then??). That doesn't help in a conversation. So, if your desire is to ignore my posts, you just lose the opportunity that one of us (either me or you) might understand the position of the other. And that is sad. Ignoring people with different opinions is counterproductive if you want to discuss something (that's what the forum is about: discussion things).
And btw, while most judges favor PO, doesn't mean that TO is forbidden in these contests. It's in the opening posts.
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I have 2 possible build ideas, but unless this topic is settled I dunno if I will invest the time into them.