Earlier quoted context omitted.
The idea is that smaller group of people actually have some integrity and sense of duty to the people they represent and the country at large, rather than just pulling the lever for the thing that benefits them the most in the immediate term. That idea has always been tested, with the current times being the largest test in several decades at least.
The argument that somebody else has better integrity and sense of duty representing my needs or wants is dead on arrival. Direct democracy is a representative democracy where each person has a representative.
Also, I assume you meant to say "Direct democracy is a representative democracy where each person *is* a representative."