Leaving aside the politics one has to question the presentation of this.
It cannot seriously be due to climate change since one airshow will have no impact whatsoever, so if they want to cancel it, and I can understand they probably cannot afford it, then they should make it clear they are canceling as a gesture about aviation and the environment which is not wholly unreasonable.
If say United airlines said they were cutting 25% of their flights for five years then that might make a noticeable but small difference.
Casting aspersions about center-left parties is a bit daft at present when the current ruling party has visibly run the country into the ground economically, socially and reputationally because they sold their soul to the devil with blond hair.