The message does not go away.
You have to do something to make it go away.
Your reply does nothing but tell users just put up with it.
There are several messages about this issue, for both iPads and iPhones for over a year.
Someone at apple will mark your inane and incorrect response best answer which does not solve the problem.
So I am hopeful that this message will come up in a search for those of us that do want to just ignore an incorrect message.
the solution that worked for me is to:
turn off iCloud back up and then turn it back on to get the message to disappear.
You and your rote INCORRECT reply “can simply be ignored”.