Nothing is stopping you using CSS to change it on your own personal instance.
There are far too many interpretations of ‘man in jacket with raised collar, hat and glasses’, are they a spy? a private investigator? a rogue agent? what’s their intent? The name FontAwesome uses is in itself cryptic, how do secrets apply to something that ranges from sensitive, private or just non-public.
In comparison there’s only one for a lock. There may be better, but I don’t think that’s it. Objects are always good, they serve a particular purpose, people on the other hand are much more vague and open to interpretation.