If it's all under one hierarchy controlling it, that's true. If the platform is decentralized and the development of the platform is independent from its use, that vulnerability from the top doesn't exist.

I'm thinking of public platforms like the internet or Bitcoin or Mastodon. Twitter isn't public, so there is no way to know what influence other entities have on it. The same is true of any individual using any platform, but there are too many individuals. We want control over the use of a platform to be divided across as many entities as possible.

There is no unbiased platform for all people to discuss ideas in nature. I don't know why anyone thinks they can create one. You can't increase communication by raising the noise floor.