I recently held a science slam about this topic! It’s a mix of the first computer scientists being mathematicians, who love their abbreviations, and limited screen size, memory and file size. It’s a trend in computing that has been well justified in the past, but has been making it harder for people to work together. And the need to use abbreviations has completely gone with the age of auto completion and language servers.
NaN: „Hey Nanna, can you call the nanny?“