My best guess is that most people have formed opinions on climate change at this point, and these types of protests don't really move anyone's opinion - if you believe in climate change, you still believe in climate change, and you probably don't think climate change is more urgent now that someone threw tomato soup on an old painting. If you don't believe in climate change, you still don't believe in climate change, I can't see soup on a painting affecting that.
I suspect Putin invading Ukraine did more for climate change action than any amount of protests would do.