Yeah, it's absurd. Most consumer protests are pointless. Pouring Russian vodka onto the floor is purely symbolic. As you point out, the money's already been paid to the Russian producer. If people wanted to apply even the tiniest amount of consumer pressure on Russia they'd probably drink their Russian vodka— since the money's already spent— then make sure to buy something else to replace it.

It reminds me of the gas price protests back in the 00s and early 10s. People were like, "Let's protest high prices by not buying gas on Tuesday. That'll show 'em!"

HelloOOo... if people buy twice as much gas on Monday or Wednesday you're not showing them (the gas station owners or the oil companies) anything. If you want to apply pocketbook pressure you have to resolve to make lasting change.