The idea is to hide all Russian achievements as a penalty for the war and to provide yet another incentive for Russia to end the war sooner.
Accurate information about Russia helps everyone, not just Russia, and removing it hurts everyone.
2. This seems unlikely to have any effect on the Russian government’s behaviour.
Odd way to protest something is to bury and hide it. You'd do far better if they just put Ukrainian flag banner up.
> all Russian achievements
Because all of Russia, every Russian individual, and all of it's history is to blame? Or perhaps it is a particular leader and his cabal? And to hide their achievements would cause them to say: "AH! now we must stop this, economic collapse is one thing, but no Wikipedia achievements?"
> provide yet another incentive for Russia to end the war sooner.
This would provide yet another incentive to turn this conflict even more into "all Russians against the world". What you want instead is all Russians against Putin. This would do the opposite if it did anything at all.
Way to think like the Taliban, North Korea, etc. Do something symbolic, but meaningless at the expense of freedom that backfires. Sorry, this is just dumb and broken on so many levels.