I'll explain now why it's such a dishonest question. It's a false equivalence that sets the bar for agreeing with an opinion at being willing to die for it yourself. That is incorrect, logically speaking. The bar for agreeing with this opinion would be whether or not I'd be willing to fight and die for MY country if it was being invaded by Russians. That's the core dishonesty of your question, that if I support their cause, I should be willing to fight and die for it myself.

I also wouldn't personally say that every last able-bodied man should fight. Say we have a Ukrainian man whose brother was killed, his brother's wife is disabled, and she has 6 kids. I would have nothing to say about what that individual man should do, and if he chose to help his sister in law get her orphaned children out of Ukraine, away from the war, and take care of them, that's his honorable choice. That brings us to the second dishonest part of your question, it sets the implied bar at a point where if one supports a country that continues fighting for its freedom against a violent aggressor, that we must naturally support the notion that every individual in that country should fight as well. It's taking a macro level question and trying to apply it to every individual; attempting to turn a nuanced opinion into a black and white one by disregarding the contextual realities at the individual level.

Your dishonesty is embedded in the question.