Hiding the Guest user account

Allow guests to log in to this computer

Allow guest users to log in to your Mac without entering a password.

• Guest users can’t log in remotely when remote login is turned off in Sharing settings.
• Guests can’t change user or computer settings.
• Files created by a guest are stored in a temporary folder, but that folder and its contents are deleted when the guest logs out.
• If FileVault is turned on, guest users can access Safari, but can’t access your encrypted disk or create files.

You are welcome.

Though my original posting with link, appears to have been removed for some unknown reason

AFAIK - the Guest Account is always present even when Disabled

That is for when the computer may have been lost or stolen.

The person who took the computer turns it ON, the Find My if setup originally, can broadcast the location of the computer.

This can be used to inform the Police to track the device and maybe also get it back

If Not, the Owner ( you ) can still place a Activate Lock or even Wipe the Drive of all Data

EDITED

Sounds like a reasonable level protection to me

That's not possible.

Also just to add from the Apple Support Article in below Link

Delete a user or group on Mac - Apple Support (CA)

Hide it? You can just disable it.

wamoh wrote:

It is disabled but I'd like it hidden from view so it can't be re-enabled.

Just to add, only an admin account can enable the guest.

wamoh wrote:

Cheers that's not possible to do on the default guest account.

No it isn't. 😎

You're welcome.

I see " because it was nontechnical or off-topic " to the OP specific Question related to Hide Guest Account