Yes, but at some point you can't just go around installing all the possible extensions/gems/whatever that you think are "good". The default gemfile would be 300 lines long with "developer happiness" gems such as `oink`, `bullet`, etc etc etc.

Most of the things that Rails is "opinionated" about are far more arbitrary than this, like whether the database primary key should be “id”, “postId”, “posts_id”, or “pid”.