Short answer: no.

Long answer: the Voynich manuscript is an ornate early 15th century European codex that appears to be written in a writing system previously attested nowhere else, and assumed by most linguists to be the author’s (or an associated small group’s) personal cipher or possibly early ‘conlang’ of some kind. There are many modern examples of this sort of thing among hobbyists, but what makes it intriguing is both how early and ornate it is. Attempts to decipher it have proved unsuccessful, so it is a favourite for speculation among both historians and linguists (with more mundane explanations) and certain other sorts of more eccentric hobbyists (often with more fantastical ones).

The Dogon are an ethnic group largely in Mali of whom Europeans and certainly Germans were oblivious in , some Portuguese ships having barely made it to coastal West Africa at the time. However, based on the more extreme claims of Marcel Griaule, and which have proliferated on certain strains of ultra-Afro-nationalism and general conspiratorial thinking on the internet and through ‘alternative’ publishers, the idea that the Dogon had some mysterious access to modern scientific knowledge and technology far beyond anywhere else at the time has reached nearly David Icke levels of extreme conspiratorial takes, and is based on no evidence and contrary to everything we know of the history of the Dogon, regional technology, or indeed global technology if we are talking about the 15th century.

The idea that a distant group in Africa about whom much has been frankly made up is related to a late medieval German manuscript in what appears to be a made up writing system of some kind has absolutely no mainstream credibility whatsoever.

(But then, that’s just what ‘They’ want you to think… /s)