How does Ethereum explain the gap in using prediction markets for controversial topics like alien disclosure?

I came across this Polymarket event asking whether the U.S. will confirm the existence of aliens in 2024. The idea of using prediction markets to incentivize accountability and transparency is fascinating, especially for high-stakes topics that governments may avoid discussing openly. However, there's a noticeable gap between what prediction markets could enable (like whistleblowing incentives or probing government secrecy) and the types of markets we see promoted.

Why aren't we seeing more markets addressing controversial but meaningful topics like this? Is it due to:

• Censorship or legal concerns?
• Lack of adoption or mainstream interest?
• Concerns over misuse or ethical dilemmas?

I’d love to hear thoughts from the Ethereum community on how prediction markets can bridge this gap and bring value to such socially significant topics. What role do you think platforms like Ethereum should play in tackling this?