Because virtue signaling. I'm not saying this to de-legitimize the "russia is bad" message, but the fact is, in instances like this (eg. a personal blog) such actions are far more about benefiting the person performing the action (ie. setting up the ukraine message) than it is actually about getting russia to stop.

Agree. Those tricky Ukrainians become annoying

Yes, I'm Russian. No, I don't support what's happening right now and I stand with Ukraine. No, I can't do anything about it. Now get out of the way and let me read the article.

These performative acts of shoving politics where it doesn't belong doesn't do anything to change the situation, they just make people like me angry.