Well, how can we mitigate the risk any further? By limiting load factors to the level permitting social distancing at all stages of the trip, including the airport? A 180-seat A320 alone would make for a 360-metre queue, should 1,5 metres between passengers be respected. Or 4 90-metre queues. That's only one aircraft. And a relatively small one. What about a wide-body with 300-400 passengers? What airport terminal where about in the world can handle this? Not to mention that no private airline can survive for a long time if the load factor is limited to the amount providing PROPER social distancing. And that cannot be achieved by leaving the middle seat empty. It's only attainable with passengers sitting in the window seats of alternating rows only - which makes for a maximum load factor of 16,67% for a 3-3 seating arrangement and 25% for a 2-2 one.
And then comes the question - won't this sort of impact on aviation be disproportionate, as compared to other venues which also compromise the 1,5-metre rule because they're not designed to handle it? Should they also be required to match the same level of sacrifice? Or should aviation be lambasted as the only "bad guy" out there while bars, taxis and whatnot else are quietly allowed to disregard the 1,5-metre rule?