I think that millions of people would disagree with this statement. I come from WordPress/com, and for sure, comments are not a dead-end thing there, because it’s an essential feature for building a community.
I agree. Having tried out a few other CMSs, I say that WP/CP is still more of a blogging software than a real CMS. I wouldn’t recommend it for a website that has many pages, because that will be very hard to manage.