On a smaller scale, tech people do the same thing by using more complex terms for simple things to appear to have some kind of special knowledge. It's all about who is on the inside and who is on the outside. Highly annoying.
Such DSLs can serve to increase the speed of communication but more often than not they are simply used for obfuscation purposes.
(I think I missed the self referencing joke).
The military take the abbr.hl. to the next level. But atleast the abbreviations are properly documented there. I guess the root is keeping telegraphy short?
On my last job it was so bad that it took like a year before you could follow conversations properly. Also old deprecated abbreviations were used for extra flavor. E.g. calling projects or departments by their former former name.
On top of the usual acronym madness, nearly everything is always referenced by code name, versioned according to arcane and strange conventions, and the mapping to released product names and real version numbers is not always documented or obvious.