While they seem like decent replies to me, there is no reason to think that you'd get the best replies to a complicated policy question from a random commenter in a forum for technology entrepreneurs.

Which is why I said "if these are the best replies".

My reading of that idiom is that it implies an assumption that they are the best replies. My comment was to point out that there's no reason to think that would be the case.

You've picked one single response that you don't like. Please read the rest in this thread, and then find a better source because there's no reason to think HN commenters are particularly expert in this area.

This was the top-voted response to the top-voted comment when I posted.

What makes these points disappointing?

Ya they seem pretty sound to me.