> If the idea is bad or wrong, it will be debated and ultimately defeated in the marketplace of ideas.
Sure, and I have a bridge to sell you.
The marketplace of ideas is a myth predicated on the willingness of participants to promote and evaluate their ideas honestly, and due to that honesty to stop promoting such ideas when they are shown to be wrong or inadequate. It requires participants to even be interested in how good their ideas are and be open to discussing them and changing views if these ideas are found wanting.
Observing real life, what we have is people flooding the zone with unmitigated faeces, either for profit or idealogical motives. They are uninterested in whether these ideas are true, good or even useful, whether there are 'better' ideas, and they often dominate through volume and repetition. Tribal cohesion ensures the spread of ideas as much or more than honest debate.
The marketplace of ideas is dead, if it ever really existed. A fairytale for children.