There are plenty of 3D printed products about, the Spitfire stick and throttle assembly for example.
It is a good solution for small production runs where making the product out of metal is impractical and getting it mass produced in China is not an option.
I see bespoke 3D printed devices versus a moulded Chinese made product as equivalent to a hand made coffee mug versus a Walmart Chinese porcelain one. The Walmart version is cheaper and technically higher quality but I still prefer my coffee from the hand made one.