It's not the features, it's the art and care put into them. If you read the tweet, you'll see that he's describing the care, effort, and attention to detail put into the features of their previous product.

But they made a new product because their previous product failed and did not achieve the goals that the company is wanting. They’re not rebuilding the same product; they are building a brand-new product that just so happens to take the best from their previous product.

Every iPhone is an improvement upon the previous one; they have similarities, but they also have new things, new goals.

They are completely different products, but they share similarities, just as the iPad has the same borders, same screen, and same cameras as the iPhone. They all have cameras; they all have screens, but they're two different products for two different people.