Also I think cocoonJS supports the html5 exporter itself too so one more reason to not show the exporter itself.
But you can still have support regarding it at ludei
We track Scirra forum every time we can, but we prefer if you could use the community for the issues related to the cloud, compilations, etc... and the Github for everything related to the plugin.
So, the scirra dropping cocoonJS is more an officialisation of the truth:scirra has no way to support it themselves, and never really had, it was just the normalnthing to do.