This is what happens when you remove the grain Spock OMG!
Now that is the most extreme example in the entire set but it shows how much Paramount ruined the picture so they could make the set as cheaply as they possibly could. Meanwhile a few miles away CBS invest tens of millions of dollars putting an entire tv show through post production, they are totally showing Paramount up. Thank god CBS got involved with Trek because if it was still down to Paramount we would be getting upscaled TNG HD blu-rays right now.
No way in hell is that a real screengrab from the Blu Rays. That is a photoshopped picture to illustrate what happens when you use excessive digital noise reduction. That is not how that scene looks on the Blu Ray.
The BD quality of the movies was fair, but in no way was it a really bad effort.
EDIT: I was so shocked by that picture and determined to prove you wrong that I looked up some screencaps from Trekcore and you are right. It really is from the movies and I am shocked I hadn't noticed it at the time. That looks abysmal.