Airships for city hops could cut flying’s CO2 emissions by 90%
By all means try it out and see what happens.
But aviation is only 2% of emissions anyway. It’s simply not important to reduce them further.
That is, even if we accept – I know, I know – the initial claims it’s still true that reducing aviation emissions is a rounding error. Which does rather produce some wonder at the insistences made about it.