I think it does affect it. Take a look.

Maximum Dark Energy = 200 + Hero Bonus + Building Bonus

Hero Bonus = Rounding of Nival[Necromancy Skill * (Level-5)1.4], for levels above 6. Note: 1.4 is in uppercase.
"Necromancy Skill" is the hero's skill in the "Necromancy" skill, from 1 (Basics) to 4 (Perfected).

"Lord of the Dead": the hero receives +1 to knowledge. The "Necromancy" skill is enhanced: the hero can raise +5% more creatures. "Necromancy" modifiers are cumulative.

That is: Basic Necromancy + Lord of the Dead (1.05), Advanced Necromancy + Lord of the Dead (2.05), Expert Necromancy + Lord of the Dead (3.05), Perfected Necromancy + Lord of the Dead (4.05).

P.S. At least once in your judgments, provide evidence.