It isnt meant to destroy their tokens or value. If thats what you think is "doing something" then that's fair; but I disagree.

They own their tokens. We just want them to show a good faith "contract" to not purposefully use the stake to undermine the consensus layer or the rewards system.

They could always transfer tokens, power down to a new account, etc. But it would be an obvious violation of promises and an indicator of hostility towards the Steem blockchain and its community.