I am sure you will find places where Tony or Myself argue the same thing some disagreement about how valiant the effort was in 5e but generally yup this.You say that, but if you look at old DnD we had things like followers, noble titles and the Leadership feat. Seems to me like the 'Mundane Leader of Man' is an archetype that was always THERE.
The Warlord simply gave you mechanics that, instead of making you deal with a bunch of random NPCs, made you interact with the other players instead. It gave you actual mechanics to support the concept.
Battlemasters, and to an extant the Mastermind, are vaillant efforts but feel more like one of the MC-like Archetype we've mentionned befoe. Like the Battlemaster and Mastermind are to the Warlord what the Eldritch Knight and Arcane Trickster are to the Wizard... except they didn't print the Warlord
I even have been working on ways to enable the NPCs angle back in via Martial Practices (it rather works like a charm)