You’re able to disable Siri in iCloud? Not turn off Siri, disable Siri back up in iCloud. And when you go back to it after not turning it on, it’s still off?
Yes. But, I'm not surprised that you're having issues. In my experience managing a large enterprise, iCloud accounts seem to have all kinds of weird, account-specific issues.
I did. It works, as far as I can tell?