AfaIk, posts and comments cannot be exported.
For the rest you may use the “export settings” function in the “personal settings” section on the webpage of your Lemmy instance (yet I don’t know what is actually exported).
Alternatively, you may use one of the tools mentioned in this post (the post is in German, the linked webpages are in English): https://slrpnk.net/post/10923543
As far as I understood, @[email protected] was talking about the phonetic alphabet used in the armies of NATO countries, which is standardised by ICAO as Alpha, Bravo, Charlie, … and is not the everyday phonetic alphabet in each country, e.g. in Germany commonly Anton, Bertha, Cäsar, … but there are plenty of different versions and variants for each German speaking country.
If we would go back to Latin, it wouldn’t be the Latin as spoken by Cicero but some Vulgar Latin, as it is the origin of Romance languages like Italian, with simpler grammar.