I think what you've missed, is that russia regularly does shit like this. Pro-govt media regularly airs segments about how Putin should nuke London, and how many brits that would kill (painted as a positive). There is this weird, extremely popular conspiracy theory in russia, that the govt like to stoke, that paints the british royal family, as some sort of masterminds, that secretly control all the west. And they talk about this shit on their fucking talk shows. Most people in the west just rarely get to see it, because to journalists, it's not really considered newsworthy, and more as lowest hanging fruit, as it's so common.

But that's just the russian propaganda, we also shouldn't ignore the actual hybrid warfarfare russia has engaged in vs EU countries, stuff like cutting undersea telecom cables, sabotaging railroads and transformation stations. That last one has been especially common in the past few years. As they also regularly target transformers in Ukraine, and there is a global shortage currently, so they're trying to make sure that western powers also can't supply ukrainians.