This passionate apologia of nihilism is not consistent with not caring what other people do or want. If "virtue signalling" elicits such reaction, perhaps it's actually working. Besides, voting with your wallet, an actual tangible action, is not virtue signalling.
How is it nihilism?
If you ever visit Bonaire let me know and I can show you the abundance of life we are stewarding on my land.
It's mostly setting healthy boundaries on what we perceive we can affect. I don't buy American food (except Cocoa Rice Crispies), functionally it's a boycott. Is that the reasoning? No, it just tastes like crap.