I don't like the new design of Google Reader because it goes against the standard UX for Google Reader.

Based on my experience with non-WP RSS feeds, I actually kind of figured that this behaviour was the whole point of the Link post format.

Most of John Gruber's posts on Daring Fireball are like this. He writes his views on the link, you read his views in the feed then click the link to go to the source. His views on the source aren't up for debate as they're usually pretty short and simply highlight parts that he finds interesting. He also posts multiple times a day which could raise comment administration to unmanageable levels if he did allow commenting.

Given all this, I actually think it's a great way of providing commentary without having to craft longer-form posts and getting bogged down in discussion. I have a bunch of (usually non WP) blogs in my Reader that do this and I don't think the practice is going away.

A permalink is generally provided at the bottom of these posts (which I think is good practice) should you wish to link to it but I feel most of the time, linking to these posts isn't really the point—they want you to see the source.