What is economic growth and what does GDP have to do with it?
There were 200,000,000 cars in the US in 1994. Suppose each car lost $1500 in depreciation annually. That would be $300,000,000,000. Should that be ignored?
Consumers have to replace their durable consumer goods to maintain the same quality of life. Every time they buy a replacement it gets added to GDP. But the depreciation of the item replaced is not subtracted in the equation that is in our economics books. But economists don't talk about NDP anyway. Like GDP is all that matters.
There are so many durable consumer goods that did not exist before 1900 and the concept of GNP/GDP was developed. Considering how much of GDP is made up of the purchase of those goods does economics with defective algebra make sense?
The net result is planned obsolescence increases economic growth if GDP is all that matters.