In the early 90’s or so, this was a popular expression - Who died and made you king? It was obnoxious then as it is now, a way to cut down someone who is deemed to be lording it over you.  Recently, the world saw the practical application of this

I can’t say it feels like déjà vu but the energy feels similar.  Thirty-two years ago my father woke me up in the wee hours of the morning and told me to come and watch history in the making.  It was the wedding of Charles and Diana – forever thereafter