It seems like this is not done yet, both here and for T333272. I am not able to edit using Visual Editor, and not able to reply to things using Reply Tools (both of which depend on RESTBase). For both things I'm getting the error "Error contacting the Parsoid/RESTBase server (HTTP 404): (no message)".
Yes, there's definitely something weird going on.
The RESTBase for these two wikis were deployed at the same time as for fatwiki and guwwikinews, and on those wikis everything seems to work as expected. Thanks for looking into it!