This is what really gets on my nerves. I understand bugs. I know that software is made by humans, and that the odd bug is inevitable. But treating us as if we were all imbeciles and suggesting all sorts of useless actions that they know have no effect at all, instead of just owning up to their mistakes, is really inexcusable.
Is it really so hard to say, "we're sorry, there seems to be a bug in the latest macOS release, we've notified the development team and they will fix it as soon as possible"? How hard can it be?
"Are you sure you're signed in to the same Apple IDs on all devices"?
Huh? Really? What can I say in reply to this?
"No, I'm using three different Apple IDs, because I'm stupid, and I enjoy calling the Apple support line for fun. Of course all my devices are using the same ID, otherwise I wouldn't expect them to be in sync, wouldn't I? What kind of moron do you think I am?"