Why did he insist on his anthracite-colored roof when it is not approved according to the development plan, but even more importantly: not even visible?
Presumably because, for him, a "not approved" does not represent legal bindingness and therefore does not constitute a regulation he is obliged to follow? I don’t know, you would have to ask him...
But where do you draw the line regarding insistence? In my opinion, it is a personal judgment whether one can or wants to live with the arbitrariness or not. I do not presume to judge his approach as right or wrong; I leave that to others here in the forum.
Factually, it is the case that he was wrongly denied the opportunity to exercise his building freedom anchored in the BASIC LAW. People evaluate the restriction of their (fundamental) rights quite differently, as can also be seen in other topics such as surveillance, informational self-determination, etc. He just wants to build his house with his money within the legally valid provisions of the development plan (which he is doing) and according to his taste. This is arbitrarily and without legal basis denied to him. Therefore, I can understand his behavior and also consider it legitimate, even if I handle it differently and cover my roof with red tiles because the fuss is not worth it to me and I do not see the roof anyway. But that is MY subjective assessment, which does not necessarily have to coincide with his and does not lead me to label him a troublemaker because of it.
Invoking one’s rights and demanding them is a fundamental element of our constitutional state, the foundation of which is the Basic Law. I find it difficult to deny other people this right or to look down on them just because one would handle it differently.
To clarify: suppose you are caught speeding at 80 km/h but were driving the allowed 50 km/h. In the evidence photo, you and a motorcyclist are visible. What do you do? Presumably, you would file an objection, right? One might also say that this is being a troublemaker. Damn it, tough luck, you didn’t have to drive along that road; there are other streets, and the fictitious fine of 100€ plus surcharges? The whole objection fuss is not worth it and totally exaggerated.
I could understand your objection; someone earning a six- or seven-figure annual salary would just wonder about it and say: do you always have to fight against it; can’t you just pay the peanuts and leave it alone? Wow, I wouldn’t want to live next to someone like that...
It’s always a question of perspective and whether you are affected or not...