Yes! Completely agree with your second point.
Users shouldn't have to think and type a query only to find out the "Create Draft" takes you to a Google login page. Poor UX design choice.
Same thoughts.
Wouldn't prefer using Google to try out a site.
I know a lot of developers who will close the page as soon as they're blocked with a Google/Facebook login.
The service definitely sounded interesting.
Hope to try it when they add an email registration option.