First of all, I want to declare that the word "country" has no obvious derogatory tendency. It's just a set of words that describe local economic development by comparing with "city", and there is no feeling of belittling people. That's why I would say that people in rural areas call the countryside after they enter the city, which shows that people have changed.
Many farmers will feel inferior when they see the prosperity of the city after entering the city, and they can't treat themselves correctly.
As the saying goes, the more people lack, the more they will show off. Some people who come out of the countryside pretend to be great in order not to be looked down upon, and try to integrate into the new atmosphere by despising their original hometown. This is actually a phenomenon of inner inferiority, just like those who feel inferior, the louder they speak, the more they try to cover up their inner weakness.
But then again, if a person can't be grateful for his birthplace, why should he be asked to have a sense of belonging to the new city? Why can he blend into this bustling city? In fact, after entering the city, these people call the countryside "the countryside" and always have contempt for the countryside. They look down on the countryside!
However, there are still quite a few people who are obsessed with their rural hometown after entering the city. When people ask about their hometown, there will always be happy and nostalgic applications on their faces, and they will tell you the beauty of their hometown in the countryside in a "show off" tone. Therefore, these people often refer to the countryside as "hometown" to show their nostalgia for their hometown.
In short, when those rural people who go to the city call the countryside "countryside", it is often their people who have changed.