Jeeesus, there goes my plans to visiting Elba...
Fly to Corsica and swim across, it's not far... But you are perfectly right, for flying tourists a short term taxation will be required, otherwise nobody is going to come (they do it with boats, why not with aircraft?).
In case you didn't read everything: Aircraft that are operated by flying schools, aeroclubs and other training organisations are excempt from the tax, maybe that applies to you?