This makes no physical sense what so ever. These buds are, what a foot apart and bluetooth happens at the speed of ***** light.
If the audio were being transmitted in analog form, via FM or AM modulation, or even, maybe, old fangled 16 bit @ 44.1kHz raw digital you might have had a point.
Its not - its being transmitted in digital form, highly compressed (probably with variable bit-rate: i.e. x bits of data doesn't correspond to y seconds of sound) over a low-power connection that probably relies heavily on error detection and correction. There will be a significant (probably noticeable) decoding lag between the radio signal arriving and the uncompressed sound coming out of the earpiece - and the two earpods will still have to keep the two channels in sync with millisecond accuracy (or the phase differences will give you an unplanned 3D audio experience).
(Maybe there's a Bluetooth audio expert there who will correct my mistakes but, bottom line, what's going on in a bluetooth earpiece is a few orders of magnitude more complex than you're imagining).
The question is, did anybody ask the engineers about this before the Apple Design Team handed them a sketch of the AirPods and said "we're removing the audio jack to make the phone thinner, so make these!"