Noted and advice taken.
Presently, this is /boot/loader.conf:
kern.geom.label.disk_ident.enable="0"
kern.geom.label.gptid.enable="0"
#Required modules for root file system booting and on zfs
zfs_load="YES"
vfs.zfs.arc_min="1024M"
vfs.zfs.arc_max="6144M"
vfs.zfs.prefetch_disable="1"
vfs.zfs.min_auto_ashift=12
vfs.zfs.txg.timeout="5"
vm.kmem_size_max="8192M":wq::
kern.vty=vt
usbhid_load="YES"
hw.usb.usbhid.enable=1
This is /etc/rc.conf:
bsdstats_enable="YES"
cupsd_enable="YES"
dbus_enable="YES"
ddclient_enable="YES"
devd_enable="YES"
dhcpd_enable="YES"
dhcpd_flags="-q" # command option(s)
dhcpd_conf="/usr/local/etc/dhcpd.conf" # configuration file
dhcpd_ifaces="em1" # ethernet interface(s)
dhcpd_withumask="022" # file creation mask
dhcpd_chuser_enable="YES" # runs w/o privileges?
dhcpd_withuser="dhcpd" # user name to run as
dhcpd_withgroup="dhcpd" # group name to run as
dhcpd_rootdir="/var/db/dhcpd" # directory to run in
fail2ban_enable="YES"
gateway_enable="YES"
ipv6_activate_all_interfaces="YES"
log_in_vain="YES"
mailman_enable="YES"
ntpd_enable="YES"
ntpdate_enable="YES"
ntpdate_pool="pool.ntp.org"
pf_enable="YES"
pflog_enable="YES"
pflog_logfile="/var/log/pflog"
pflog_flags=""
saver="logo"
sendmail_enable="NO"
sendmail_submit_enable="NO"
sendmail_outbound_enable="NO"
sendmail_msp_queue_enable="NO"
postfix_enable="NO"
sddm_enable="NO"
tmpmfs="YES"
tmpsize="1g"
tmpmfs_flags="-m 0 -o async,noatime -S -p 1777"
syslogd_enable="YES"
syslogd_flags=""
sshd_enable="YES"
usbd_enable="YES"
postgresql_enable="YES"
plexmediaserver_enable="YES"
plexmediaserver_support_path="/usr/local/plexdata" # Plex data: logs, media metadata, settings, etc
plexmediaserver_tmp="/var/tmp/plex" # configure tmp directory used for the transcoding process if desired
plexmediaserver_maxplugins="6" # Maximum number of background plugin procs. May have to raise in rare cases.
zfs_enable="YES"
devfs_system_ruleset="system"
#kld_list="/boot/modules/nvidia /boot/modules/nvidia-modeset"
kld_list="/boot/modules/nvidia /boot/modules/nvidia-drm-515-kmod"
sndiod_enable="YES"
virtual_oss_dsp="-T /dev/sndstat -S -i 8 -C 18 -c 18 -r 48000 -b 32 -s 512 -f /dev/dsp0 -c 2 -d dsp -c 18 -d vdsp -t vdsp.ctl"
ipmi_load="YES"
mps_load="YES"
nullfs_load="YES"
tmpfs_load="YES"
That's minus all the addresses and things at the top.