I may have a workaround for this feature for those annoyed about seeing it pop up again and again; try the "announcementsignore" feature on your personal global Javascript. As I tried this on a few pages on a wiki I don't follow and AFAIK this does seem to work. Here's my current one, the the three numbers in the middle are the wikis I follow, which can be found at the city_id: box of the corresponding wiki's Special:Version:
window.announcementsIgnore = {
option: 'opt-in-all',
exceptWikiIds: [
663,
74,
177,
]
};
For wikis you do decide to follow though, you will get this notification per read page.