Not always, and also thats why it benefits them. When you censor someone, you cant prove him wrong anymore. Also, no debate, so everyone becomes dumber on the topic.
If you don’t censor the person and he is allowed to speak. He will continue to spread his false promises propaganda. That’s like giving his a free license to corrupt.
1. And what if you're wrong and his "corruption" is actually the truth?
2. Removing him from your sight doesn't make him go away. He just spreads his ideas underground, where they are harder to counter.
3. Censorship tends to showcase that the censoring party can't defeat opposing ideas. Everyone knows this, and that creates a natural bias in favor of the censored side.
The best solution is full freedom of speech. If his ideas are so bad, they can be publicly and easily defeated.
Censorship doesnt work long term, because censorship can be bypassed easily and is bypassed easily. Because people you censor learn how to bypass it and improve, while people on your side get dumber on topic. Debate is needed to learn a topic. And if obvious truth is on your side, why would you fear debate?