These are a bunch of straw man arguments against what I said. There is a difference between clicking a link and an extension being able to read the contents of pages you visit -- like your bank records or credentials.
Some of these "choices" aren't actually _made_ by anyone. Even with trust of an author, if remote code is being used and a domain or server is hijacked, then the remote code could be replaced. It's a lose-lose problem for Google and not addressing this problem means worse security for casual users. The boogeyman that they will remove useful extensions is antithetical to their behavior so far.