Unlike nearly the whole of Azure for some inexplicable reason to just administrate Universal Printing the account must have a licence for UP. Please remove this requirement but by all means prevent t...
Microsoft Intune also originally went down this path, starting with all admins needing an Intune license to get in the admin portal. They eventually backtracked on it and added a https://docs.microsoft.com/en-us/mem/intune/fundamentals/unlicensed-admins#:~:text=the%202006%20release.-,Allow%20access,access%20to%20unlicensed%20admins%20%3E%20Yes.&text=You%20can%27t%20undo%20this%20setting%20after%20clicking%20Yes. option in the Tenant administration settings, which is now set to on by default for all new instances.
So there is precedence for not requiring a license in order to do admin work.