When the airlines’ share prices drop 3-5% afterwards, you know it means something. This tax needs to double in 2021 and double again in 2022. Then we’re talking.

And check out the fantabulous doublespeak from Air France in response (translated from French by Google Translate):

Air France describes the government's announcement as "incomprehensible". "This new tax would strongly penalize the competitiveness of Air France, while the company needs to strengthen its investment capacity to accelerate the reduction of its environmental footprint, particularly in the context of the renewal of its fleet," responded the French company.

Try to repeat that three times in a row after a couple of beers.