It's not the IT salaries that are the problem, it's that many places working on government IT projects in Germany range from slow, backwards and incompetent to outright toxic. These are not environments that attract the best people but usually clueless YES men.
Yes, that’s what I heard, too. I’d probably give it a try, though, as I know similar structures from my work in FinTech, where we integrated with quite „conservative“ banks as well.
I kind of have a knack with finding the right knob on such people to get to the desired goal.
It bears repeating: this is not the case everywhere and the same principle applies to the private sector. You can usually tell from the job description and the interview