A better usage of apropos for searching the man directory
apropos just looks in the command description, not the full man page. There are no specific commands to &quot;intelligently&quot; search within all man pages, but in a bind you can always run
cd /usr/share/man
zgrep -i smartcard man*/*

PS: This won't help for system_profiler though because the data types supported aren't listed in the man page at all.