Is there any German that does not think Americans are fake?

Almost every German I come across tells me American "niceness" is fake. I do not agree but I want to know if this is an opinion most/all Germans hold. I have never seen German take the opposite side of that point so I am asking here to see if the issue is my bubble.

NB: There is no point responding to just say Americans are fake. I am more interested if you do not think so.