I could suffer android, or like you know I could plug in the 3 cm converter onto my 20cm cord when my can’t find my airpods.
Dongles are never the best answer. Either bulky and akward, or tiny and lost/broken. It would take a bit less than 3cm to just add the extra chip and jack.
You have a massive wire attached to your headphones already...
Assuming that you can find the adapter...
Or you can use the bundled headphones. Why not keep the adapter attached to your headphones?
Maybe you use your headphones with more than just one device?
I plug my phone into my truck every morning on my way to work.
Even my cheap car has both Bluetooth for audio and a USB port that supports the "iPod protocol" for playing audio via USB.
Your newer car.
Some of us have old cars that we see no need to upgrade.
I have many different pairs of headphones. A car stereo system. A home stereo system. Occasionally, I hook up to FOH mixers.