Finally all caught up. Just watched last week's episode.
I agree with many (most? all?) of the takes in that article.
Jax was an interesting character in the first couple of seasons as he grappled with a double life and showed signs that he actually had some misgivings about the bad things he was doing. By this point, he's a bad guy who's very hard to root for (unlike Walter White) as he seemingly kills without a second thought and without searching for other solutions.
I agree that there's still plenty to watch for this season and I'll see it through - I do like the show. Unfortunately, somewhere along the line though, they missed an opportunity for this to be a truly great show.