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Pandoc's documentation itself says that the conversion is lossy.

Pandoc creates PDF using LaTeX. You still constrained to LaTeX features, and therefore the lack of trivial accessibility.

Pandoc conversion is another trip down the rabbit hole (latex to markdown:

Error at "input" (line 265, column 1): unexpected '\n'

The assertion was that LaTeX cannot generate specific formats. Using Pandoc (NB: Pandoc Is Not Markdown, though it's often used with it), s well as earlier tools, that is in fact quite possible.

Using templates, with quite a level of flexibility.