Looks good, but I think that retaining some mention of orphan mode is
appropriate. Some distros shipped with local clock in their ntp.conf. I
think the idea was to do what orphan mode does better.
How about appending another paragraph:
If you find a localclock in the ntp.conf from your distr
https://docs.ntpsec.org/latest/driver_local.html
Current Description
Note: We recommend against using this driver. A much more flexible
replacement is described on the Orphan Mode page.
This driver was intended for use in an isolated network where no
external source of synchronization such
