It is utterly stupifying that anyone so ignorant of the basic mechanism that drives climate and weather on this planet would dare to argue climate change. The very fact that a citation would be asked for or needed about why we have our seasons illustrates a complete lack of knowledge or understanding of the issue. The citations provided concerning the earths expanding orbit have absolutely nothing to do with seasons on earth. Using those citations as if they say anything about our seasons says that you don't understand those citations to begin with.
Perhaps this will help?
https://spaceplace.nasa.gov/seasons/en/