Counter-point: as a wordsmith, it's incumbent on the article's author to make their point in an unambiguous way. In your example, rather than write "the elevator has special firefighter buttons", the author could choose to write "the elevator has buttons which are only available to firefighters". Or alternatively, "the elevator has buttons which are only available to certain firefighters".
The amount of care the author puts into their phrasing determines whether their point comes across as intended, or not. The average magazine reader can likely figure out that there's no such thing as "special" firefighters with "privileged" access to elevator buttons that other firefighters lack. They may not have the programming knowledge to do likewise with "developer access", even if they are reading a magazine like "Wired".
The amount of care the author puts into their phrasing determines whether their point comes across as intended, or not. The average magazine reader can likely figure out that there's no such thing as "special" firefighters with "privileged" access to elevator buttons that other firefighters lack. They may not have the programming knowledge to do likewise with "developer access", even if they are reading a magazine like "Wired".