Facts.
I see a lot of people saying Dre hasn't done anything dope lately, who haven't even heard the Marsha project. If you listen to that and compare it to what he was doing on Truth Hurts' first joint, you can see that he's definitely more advanced now with his techniques for R&B. He's stepped it up crazy.
Like you said, he's been at it for a few decades, he's not going to stay in the same place. Lord Finesse recently said that the expectations for Dre are so high, that there's almost no way for him to stop putting the pressure on himself to top the classics he's already done. No matter what he does now, people are gonna have an issue with it. That's why we haven't seen Detox.
He reused some played out samples on that record, which really took away from the experience. Didn‘t sound fresh. It was a good album but it lost points heavy for that reason, for me personally.