Honestly wouldn't say so... In both cases you are trusting the coordinator more than you should. And in both cases users often have very bad post mixing practices.
But in whirpool it's especially easy for the coordinator to tag users: https://gist.github.com/m0wer/e701bf5934474935c459b5e84e5d4e1b
And the coordinator choosing what inputs make it to the round... idk, way too much trust for my taste.
