Re: Lack of integrated email/contacts/calendar?
Hmm. My smartphone connects totally well and easily to a FOSS mailserver. Well, it does not connect nicely to an Exchange server, but that's not what is mentioned in the article.
You do know what integration means don't you?
So you can access your email. What about your calendar and contacts from the same app? Oh, right, that isn't going to happen.
So how is it integrated? If you're faced with a question that is tough to answer replacing it with a different question that you can is generally not helpful.