Being anywhere but right behind or right above the plate is going to make it difficult to tell if the pitch was a ball or a strike. Regardless of a dead center or offset camera angle, they are both from the outfield, which makes visually inferring when the ball crosses the plate a hard problem for our eyes to handle. Since pitches, even fastballs, have incredible amounts of movement, watching from a television means guess work at best. Thankfully, all baseball broadcasters have all kinds of camera angles and pitch tracking to show exactly where the ball crossed, and those features are used frequently so the viewer is rarely left in the dark on questionable calls.

Neither is optimal and I personally thought the offset camera did a far better job indicating the pitch was outside for the fastball pitch the article focused on (though the slider movement was indeed exaggerated). Then again, I have watched baseball from the offset angle all my life and it's probably just a arbitrary preference at this point.