That's so strange and really quite sad as an expression of how unhappy people are feeling. I think many people are seriously concerned about the tax burden here in the UK and the 'International wealthy' floating about going in and out of the country have never really paid that much beyond buying trophy houses and lifestyle stuff and get lots of the perks of living here but not much of the responsibility. That is, I suspect, what seems to annoy people and in London and the South East where this disparity is most visible.
I saw a post from one of the Manners sisters (Lady Eliza the youngest) on social a few weeks ago when Sothebys held a dinner there at the Tower to showcase items in a forthcoming jewelery sale. Hosted by Harry Roseberry (formely Dalmeny before his father passed) some interesting consigned lots from various origins to later be sold at Geneva in early November included a brooch worn by said to be worn by Emperor Napoleon. Guests had earlier toured the Jewel vaults and exhibition rooms before dinner, the rooms that show the Crown Jewels as displayed are understandibly not to be photographed, in my view, in case someone gets security clues.
Food waste is also really not nice to see, although it's much easier to clean off. At the moment some people are really cutting back on groceries due to cost of living crisis in the UK so traditional Crumble and Custard is a treat, or even needed calories and sugar that, some people are probably skipping these days or maybe only have at day care respite centres especially if they are elderly and worried about bills. Maybe that is part of what they are trying to say? Not sure but wasteful.