I honestly think Nakamura wants to wind down, and WWE is the perfect place for that. Slower style, half assed matches and making loads of money. Easy days for Nakamura, I am pretty sure he's probably happy to be where he is.
If this was 10 years younger Nak, he'd be probably kicking rocks. But he's at a different point in his career. Has people to think about other than himself and probably wants to ensure security and a better position for them.
No surprises here.
Top 5: 1) Seth Rollins 2) Becky Lynch 3) Aleister Black 4) Adam Cole 5) Daniel Bryan
This is a great time to have an expiring contract AND be content with your role in the WWE. They're afraid of people jumping ship so they're paying them more. Those new TV contracts start soon so they're going to be able to pay people more.
Making bank while making less effort sure sounds nice. If this puts him in a better financial situation then all the best to him. He's been dialing it for years even before he came to the WWE and I understand why he prefers WWE now.
...Beware of he who would deny you access to information, for in his heart he dreams himself your master.