It is the same with NetBSD, which I love, although it annoys me that Inetd is turned on by default.
Generally, very little is "turned on by default" which sets this OS apart.
Where are you getting your rc.conf?
This looks reasonably conservative: 1 line.
/pub/NetBSD/NetBSD-release-6/src/etc/rc.conf:
rc_configured=NO
You're looking in /etc/rc.conf instead of /etc/defaults/rc.conf
To me, there's nothing quite like the feeling OpenBSD offers you of running `ps -ax` and seeing a nice, clean, minimal list of essential processes.