The airlines (or airports) could give out KN95 FPP2 face masks (without a valve). Instead of the triple wrapped postage stamp sized wet wipe I was given.
That would make a difference: and show they took their responsibilities seriously. If you look at CFD modelling of air distribution in a commercial jet (and recognise you cannot move away from whoever you are next to for the duration of the flight) it is hard to argue the risk profile is similar to that in a supermarket, restaurant or bar.