And that is for one very simple reason.
Survival, in Classic/Vanilla is the only section where they could possibly put in anything that focused on melee for hunters.
Why?
Beast Mastery back then, both talents and in the spellbook, focused solely on the pets/beasts in various ways. Nothing else.
Marksmanship back then, talents and the spellbook, focused solely on the ranged weapon itself. On ways to improve with it.
What’s left, was Survival…
There you had anything that did not fit into either Beast Mastery or Marksmanship.
Meaning: Melee, Trap enhancements, general Utility, defensives. Etc.