Sure, you bought a pair of 1000$ headphones, then use the adapter and it will work as before. You have a collections of headphones? Well, stay in the past dude. You think the sound is better? Stick to LPs.
The problem is that the adapter doesn't make it work anywhere as well as before. You need a decent DAC chip or the sound is significantly degraded, particularly with high-end headphones, and the cheap adapters on the market now convert your $1000 headphones into Beats-sounding junk.