You'd have to be a Conservative and an American to get it.
In a world though in which Russia is aggressively expansionist in Europe, hostile to the US around the world, and can rain nuclear destruction on us in less than an hour, fundamental national security considerations require that we oppose them. And, like supporting the Afghans during the Cold War, helping Ukraine in a proxy war with Russia is how we bring down Putin and his vile and dangerous regime.
Realistically, the world does not offer perfect allies, but the Ukrainians are better than most. Added to NATO and the EU, a victorious Ukraine would greatly bolster the pro-US contingent and act as a permanent check against Russia breaking bad again. We would even have a fair chance of turning a post-Putin Russia into an ally against China.
You'd have to be a Conservative and an American to get it.
In most conflicts, Americans tend to polarize quickly, making one guy the "good guy" and the other guy the "bad guy." But sometimes, both are bad guys. I'm resisting the narrative and thinking that this is one of those times. Aside from the fate of innocents, I'm not sympathetic either to Ukraine or to Russia.
As for Tucker, my take is that he is less concerned about the geopolitics of this situation and more concerned about the damage to the taxpayer, the farmer, the supply chain, the consumer—all of whom will face privations because of this murky situation in which there really is no clear hero, and no definition of "freedom" that is completely legitimate.