Use of Undead - A Tangent

[Psyren]

The intended undead are definitely relevant, since we're discussing magic that creates undead, not the set of all undead that exist.

The two are correlated, per Libris Mortis and BoVD. Magic that creates undead leads to the latter, intended or not. The reason for this is theorized in LM, but the fact that it happens is just that, fact.

Isn't redemption a specific mechanic in BoED though?

"Any" encompasses all forms of redemption.