Earlier quoted context omitted.
You just built another roof on top of your roof. People generally limit the number of roofs to one, as they are expensive and important for keeping the outside out and the inside in. Residential roofs are more or less the worst place possible to put solar panels.
> People generally limit the number of roofs to one, as they are expensive and important for keeping the outside out and the inside in. What does this mean? And why is it the worst place to put solar panels? Is this and America only phenomenon, cause in India people are installing them like hot cakes on the roof. What’s different about roofs here?
The American roofs mentioned are typically significantly inclined, made of a less rigid material (wood, asphalt shingles), and not built to the expectations of supporting as much.
When OP says 'the worst place' they mean it is not a structural place, it is hard to access, and it serves an important function that is best not to mess with.
Note, I do not fully agree with OP but I get the points made.