Processes in Microsoft 365 for setting up Office apps, redeeming product keys, and activating licenses.
.....
So yes, I expect these messages will be a "permanent" addition to Office 2010 after EOL.
I hope we can still disable them like we are doing now. I don't mind being reminded one, twice, three times but over and over again and again makes it very frustrating and in my opinion leads to very poor customer relations. I have a Mac in addition to a PC and may well abandon MS if junk like this persists. When MS discontinued support for W7 they pestered us for a while but not like this and there was a button to "stop this message".