If interested, I list the strings that should be matched in a self-answer to
What are the top level question & answer localized flag_option titles? Ironically, a user who used to be a Stack Apps moderator basically objected to the same issue of not wanting to use the text. They left comments on that question effectively amounting to "don't bother with knowing these; push for a fix to the SE API and just use the IDs you manually determine, but which might change."