May be politically powerful city/station who knows, some things just happen only in India.. In my opinion in south coimbatore and vishakhapatnam are also facing similar negligence as some of the northern cities that is mentioned here. Recently the request of a train by both coimbatore and nagercoil people through madurai was said to be rejected by railway and there are several examples like this. More and more genuine requests are getting rejected and the focus now remains on Vande bharat, I do not know how this is going to work in south. Only time will tell if this is a success or otherwise.