On the Konkani Wikipedia (gomwiki) if we want to create a Flow board in any namespace other than Talk, then we have no option but to request help from a member of the Collaboration team. I think it would make sense to give the right 'Create Flow boards everywhere' automatically to admins on gomwiki.
I do not see any need to have a discussion for this on-wiki, because it's normal for admins to be able to change the content model of pages. Still, let me know, if needed, I'll post a notice on the main community page.
Please provide details in a separate bug, if this is still happening. Flow boards can only be moved if you have permission to create a Flow board at the destination. This is by design, so e.g. you can't move Flow boards from a Flow namespace to a non-Flow one, unless you can create Flow boards in the non-Flow namespace.
Anyone with flow-create-board should be able to create a Flow board anywhere, or move one to anywhere.