Latex is in no sense required by pandoc and never has been, not ten years ago, not twenty years ago. Everything you are writing is deep conceptual confusion from top to bottom. You might as well say it has required Microsoft Word since the docx readers and writers came out.

Latex is a typical route to produce pdfs according to your specification, but typst is what I use; occasionally groff. I use latex when what I am typesetting uses greek, arabic or hebrew text, but only because I haven't yet bothered to learn the typst approach to them.