It sounds as if the Greens really have everbody by the testicles in
Germany.
No, just the pilots.

Well, I think it is good idea to tax the noisier aircraft a bit more.
Do not forget that airports have neighbours too. And Germany like many
other west European countries is very densly populated.
You see a lot of aircraft overhere with off standard mufflers and
propellors just to keep the noise down.

At my home airfield they charge you extra during the summer months
when you come in after 19:00 or on saturdays and sundays. In this way
they want you to fly during office hours. Before I forget, we have
"noise sensitive areas" too.
They need to be avoided as much as possible.

You can always see the pilots with N-reg aircraft coming out of the
office looking a bit pale and staggering on their feet after they have
paid the landing fees. They do not have a noise certificate thus
paying the highest fee.
I always like to ask them, with a smirk, 'Nice plane, an SR22 isn'it,
what did you pay for your landing? he he he'

-Kees D-EDMB