Its childish. Striking out maliciously at random web developers surrounded by state propaganda is counter-productive. This just annoys them and feeds the narrative that they're under attack by the West who hates them.

I would imagine web developers over there, being more educated, technical, and exposed to the West, would be the ones less likely to support the war.

There's nothing subtle about wiping files, why not provide news and information that's being blocked? This could have been an information bridge that would be hard to censor. Hell, run a crypto miner on their machine and donate to Ukraine if you're trying help, that'll have more of an impact then wiping some poor dev's files.