The irony is that almost all of the countries that call it something derived from the Russian name are also ex-Soviet, who you might expect to have some sympathy.
After hearing lots of people from lots of countries refer to The Czech Republic of my youth (technically false - it was Czechoslovakia in those days) as /Czechia/, even I as a brit decided that that was the more sensible name to use, and that’s exclusively what I use. It’s shorter, for pity’s sake, what’s not to like? The pronunciation’s easy too. If you’re a brit that’s never encountered it, it’s like the final word in “The Slovaks are a bit checky, but the Czechs are checkier”, at least if you’re non-rhotic.