You aren't wrong on either; Germany's tax law is insanely complex but also many people don't want to change the tax law as they can deduct a million and one things.
Since Hacker News also centers on entrepreneurship: I know quite some entrepreneurs in Germany who think this way about the bureacratic chicanery that companies have to handle, and already thought about whether hiring a hitman for these politicians would be a good idea. The hate for the political caste in Germany among many people is insane.
These laws may very well be terrible, but no need to mention on an internet forum you want to help (hire?) someone to mass murder people involved in making them. Jokes and sarcasm don't always land as intended.
As to a more constructive path: bureaucracy all over EU is definitely considered a big problem (for startups, and for many others) and there are a bunch of movements aimed at addressing them at all kinds of levels. For example look at the eu acc movement.
One should hire an accountant to handle the bureaucracy, and of course charge enough to make that viable. And you should stop airing your murderous dreams in public, that's disturbed no matter your feelings towards politicians.
Startup founders dislike any regulation that doesn't let do heinous stuff to earn some money, so I'm not really sympathetic with their plight honestly.
The second half of that also sounds unhinged.