I see a lot of people complaining that the Fairphone 6 doesn’t have an Aux jack.
Just use an adapter cable.
A 3.5mm Aux jack takes up a significant amount of space just to connect a few wires that could be connected through USB-C anyway, that space could be used for a bigger battery.
Even if there was a good enough reason to keep Aux it should be 2.5mm Aux and not the usual 3.5 as it does exactly the same thing but uses less space
You can have wired USB C headphones with no latency.
Also any good headphones should compensate by delaying the video a bit. At least on iOS with Airpods the audio and video are almost perfectly synced. Same with any other bluetooth headphones I’ve used. I did have a REALLY old BT speaker with like a 500ms delay and that was very noticeable. But that speaker is over 10 years old and cost $20.