At the end of the day, there are more things to consider than a single tax figure. No matter if they change this law or not, the point of no return has probably passed for Germany.
It’s generally a good idea to leave the Germany. This is just another proof of the parasitical nature of politicians and the government. It’s simple arithmetic. Since they spend to much for useless and destructive causes they need to print more money and try to squeeze more money out of their citizens. The decision to leave the country or not should be obvious.