Because people will accidentally push the button and be sent to LinkedIn. Good for their stats. Computers are no longer being built to do what you want them to, but what the software maker wants you to do with them.
I cancelled Netflix years ago. I just got a new Shield TV remote with only a Netflix button and it is constantly getting hit. I probably hit it 5+ times a night. I wonder what they learn from that.
If that button makes 1 out of 10 people have a slight preference for Netflix, it still adds up. The real question is how much Netflix is paying NVidia to have it there.
Open it up and put a small bit of kapton tape on the circuit board beneath that button to prevent it from making contact. Then it will do nothing, forever.