He's being quite facetious. He means you are free to edit the source code and make Unity be gave exactly the way you want.
i dont understand his reply either
but i think this would be a better source:
http://www.omgubuntu.co.uk/2011/11/ubuntu-desktop-designers-clarify-on-configurability
----------------------------------------
> Date: Tue, 1 Nov 2011 17:47:32 -0400
> From: anthropornis@xxxxxxxxx
> To: ayatana@xxxxxxxxxxxxxxxxxxx
> Subject: Re: [Ayatana] option to disable Unity launcher
>
> I'm not sure I understand your reply, I cannot tell if you are being
> facetious or what
>
> On 11/01/2011 04:44 PM, Jo-Erlend Schinstad wrote:
> > Den 01. nov. 2011 21:26, skrev anthropornis:
> >>
> >> Will Canonical ever permit the user to disable the launcher so that
> >> he or she can use the dock of their choice (or something else
> >> altogether)?
> >
> > Canonical has chosen to permit 100% configurability. Is that awesome,
> > or what?
> >
> > Jo-Erlend Schinstad
>
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