What does daemonize do that this demo doesn't?

[RichardBronosky]

It seems that daemonize has a lot that it can do to meet various needs. But in the simplest cases, is there anything missing from just doing

# bash -c 'cd /; setsid sleep 10000 </dev/null &>/dev/null & jobs -p %1'
9864
# ps -p 9864
      PID    PPID    PGID     WINPID   TTY         UID    STIME COMMAND
     9864       1    9864       6632  ?           1009 17:40:35 /usr/bin/sleep

as described here?