Do you think the manufacturers have a department of acronym technology? Does one manufacturer feel that their abbreviations are superior to the others? How come every new airplane also has to use new acronyms instead of recycling previous ones?
When we started with the A320s our in-house training department would issue us booklets to help tranlate/decode the acronyms. What became fun was to use another manufacturer's terms when dealing with a service rep or instructor and watching them squirm. FCU vs. HMU, FIM vs. TAFI or TSM, etc.
And for real fun, ever come across an unknown acronym in a logbook?