This is a tricky tradeoff. Making products disposable can also allow different manufacturing choices that lead to less material being used up front or a more robust structure for the same material cost resulting in a lower failure rate, or lighter products and hence reduced impact from shipping. If the failure rate is low enough, those factors can beat out repairability and result in a product with lower environmental costs and resource usage on net.

This is a rare situation, but for small items with low failure rates and usable lifetimes of at least a few years, it can definitely happen.