Rendering to a non declared custom format silently renders to quarto default format

> quarto render .\test-quarto-acs.qmd --to acs-html
pandoc
  to: html
  output-file: test-quarto-acs.html
  standalone: true
  section-divs: true
  html-math-method: mathjax
  wrap: none
  default-image-extension: png

metadata
  document-css: false
  link-citations: true
  date-format: long
  lang: en
  author:
    - name: Andrew N. Other
      note: A shared note
    - name: Fred T. Secondauthor
      affiliations:
        - name: Current address
          city: Some other place
          country: Germany
    - name: I. Ken Groupleader
      email: i.k.groupleader@unknown.uu
      phone: +123 (0)123 4445556
      fax: +123 (0)123 4445557
      affiliations:
        - id: unknown1
          name: Unknown University
          department: Department of Chemistry
          town: Unknown Town
        - id: second-uni
          name: Second University
          department: Department of Chemistry
          town: Nearby Town
      note: A shared note
    - name: Susanne K. Laborator
      email: s.k.laborator@bigpharma.co
      affiliations:
        - name: BigPharma
          town: Big Town
          country: USA
    - name: Kay T. Finally
      affiliations:
        - ref: second-uni
        - ref: unknown1
  title: 'A demonstration of the _achemso_ {{< latex >}} class^[A footnote for the title]'
  title-short: An _achemso_ demo
  keywords: 'American Chemical Society, LaTeX'
  abstract: |
    This is an example document for the _achemso_ documentclass, intended for submissions to the American Chemical Society for publication. The class is based on the standard LaTeXe _report_ file, and does not seek to reproduce the appearanceof a published paper.
    This is an abstract for the _achemso_ document class demonstration document.  An abstract is only allowed for certain manuscript types.  The selection of `journal` and `manuscript` will determine if an abstract is valid.  If not, the class will issue an appropriate error.This is the abstract.
  bibliography:
    - bibliography.bib

Output created: test-quarto-acs.html

title: ACS Journal Format
author: Charles Teague
version: 0.9.1
contributes:
  formats:
    common:
      csl: american-chemical-society.csl
      shortcodes:
        - fancy-text
      filters:
        - latex-environment
      environments:
        - scheme
        - chart
        - graph
        - tocentry
        - acknowledgement
        - suppinfo
      commands:
        - ce
    pdf:
      cite-method: natbib
      biblio-config: false
      format-resources:
        - achemso.bst
      template-partials:
        - "doc-class.tex"
        - "title.tex"
        - "_affiliation.tex"
    html: default