Why is creating undead Evil?

[ShurikVch]

Look there: there is Tyr - LG God of Justice
Now tell me: would such god do a certainly-non-[Good] thing like creating constantly-world-polluting Undead?
No?
But he did it: Miltiades the Undead Paladin is Tyr's creation
Not so [Evil] after all?..

I already said it, but one more time: those who complaining about the world-destroying properties of regular Undead are ignoring all known counter-examples - such as Baelnorns of Myth Drannor, largely-neutral Dustmen, or city of Hollowfaust

Also, I considering any references to Libris Mortis-exclusive content as dubious at best, because this book is:

1. Full of variant rules almost to the Unearthed Arcana degree
2. Poorly edited (Neutral example creature for always-Chaotic-Evil Gravetouched Ghoul template)