I agree with this assessment fully. Also the whole regional chieftains bargaining in national politics also is similar to how the different regional kingdoms pulled each other down. The politics of today represents a lot of similarities in a different context from that of the past. Muslim appeasement etc. Hell I would say Marathas reaching upto Attock has parallels with Modi winning 2014, winning Maharashtra, Jharkhand, Haryana etc. Delhi followed by Bihar have proved to be his Panipat.Pandyas were only successful because Cholas exhausted themselves with the Chola Chalukya wars even as they were the eventual victor and meanwhile Chalukyas also broke the back of Pallavas.
I wouldnt say the age of kings is over. Look at the reverence some leaders inspire in India. When MGR had a stroke which paralyzed his left arm, dozens of Tamil youth chopped of their own arms to show their empathy!
But what about the north? How are the entourages ,militias and behavior of Laloo,Mulayalam and Mayawati any different from a petty king ?
Or Thackeray mania in Maharashtra? Not to mention the reign of "Anna" NTR in Andhra. Given half a chance, their followers would have them coronated. Heck I think NTR went through a mock Pattabhishekham(Vedic coronation) complete with a bath of milk!