In the current political and cultural climate, using Russian-themed names for things, even in cutesy and seemingly innocuous ways, is a bit unwise. There are plenty of other good names to choose from, while normalising Russian language and "culture" pretending that it isn't the culture of the aggressor, is dangerous.
Also, 'Tsar' is a term that was also used outside of Russia (Bulgaria, Serbia) — never mind that the last Russian 'Tsar' died over a century ago; 1721 even if you follow the Russian naming convention!
On that note we maybe should change the name of the game of Bridge.
If so I would like to change the meaning of playing a trump card at the same time.
Politics are important. Please let us not trivialize them by such non-issues. The etymology of the words goes much much deeper.
"The one who only takes joking for joke and seriously only seriously, he and she have actually taken both of them badly"
I don't get it—what's the relationship?
https://en.m.wikipedia.org/wiki/Contract_bridge
Maybe too contrived.
But I did not think the blatant xenophobia in the OP should stand unopposed.
Especially for a word which already to a high degree has been assimilated into (US) English.
https://en.m.wikipedia.org/wiki/Czar_(political_term)
But when I need to explain the joke I must admit defeat :-)
Pretending the USA isn't the main aggressor is delusional.