Downloaded an OSBoxes VM of Ubuntu 22.04 to test something... discovered that the "Want to hear about backup software?" popup appears to be taking lessons from Microsoft's "Free upgrade to Windows 10" popups... thankfully, before I could get back to it and check if the "I don't consent to hear more" X was just an only-on-hover thing, the screensaver kicked in and got rid of it for me. Yet another reason GNOME isn't the DE for me, I guess.