Transhumanism - I agree with you this is a dangerous path, but I don't think it's one we can stop anyone from going down. I think we're going to have to learn this lesson the hard way.

Prejudice - I'm not sure you understood what he was saying (or perhaps I don't). He's saying everyone is free to do what they will as long as they aren't harming anyone. What "harm" means here is unclear, but it seems like a good sentiment to me.