Agreed, one of my great pleasures during COVID when I had terrible insomnia and couldn't sleep was to cycle down to Billingsgate in the morning and eat one of the fantastic bacon and scallop rolls from the cafe in the market. Definitely going to miss the place.
I had honestly made my peace with it moving to Dagenham. It makes sense for the Farringdon area, it makes sense for transport links, it even makes sense for the traders, who mostly live out that way. To close the existing markets without building a new one is cultural vandalism.