syssetup/lang/fi-FI.rc is a 100% copy of en-US.rc. Not a single string or path within did differ.
The file emerged once during some refactoring when parts from userenv were moved to syssetup in SVN r73518 == git c24dcb3ff2 .
By deduplicating that file syssetup.dll shrinks from 1.374.208 -> 1.361.920 for GCC8.4.0dbg RosBEWin2.2.2
and it will speed up the development of that module if one rc-file less has to be groomed everytime something is added into syssetup.dll.
It is quicker to recreate that file later if some use for translation would evolve in the module.
I linked this commit against CORE-18893 although my commit did neither introduce
nor would solve that bug of 'the language not generating any startmenu entries'!
I stumbled over the file being a total copy of en-US
after I saw that glitch and created the ticket and then compared the contents of fi-FI.rc to en-US.rc
So I though the linking would make kind of sense.
I installed in finnish before and after my commit. No change!