Somebody read that pillar pages work, so a writer spent three weeks on four thousand words covering everything about one subject. It ranks for nothing, because a pillar is a linking structure and nobody built the links.
The structure is a broad page linked to and from several specific pages, each answering one question properly. The specific pages are what people search for. The pillar exists to connect them and to be the page you point at when somebody asks what you cover.
The word count is a symptom of covering a broad subject, not the mechanism. A three thousand word page that answers nothing specific loses to a six hundred word page that answers one thing exactly.
Send a link or a draft. We reply with what to cut, what is missing and the one number it needs. One email, no call.
A published page, a draft, or the topic you are stuck on. An editor reads it and writes back with what to cut, what is missing and what number it needs. No call, no pitch.