Humanity has lived under the tyranny of a powerful minority for most of our civilisation. Direct digital democracy would lead to greater representation of humanitys needs, with more needs being met, instead of a rich/powerful minority mainly getting what they want at the expense of everyone else.
Democracy is supposed to be about everyone being involved in making political decisions and getting an equal vote. One politician cannot equally represent hundreds of thousands - millions of people. Direct digital democracy would be true democracy, giving everyone a real vote, real representation
Complete direct democracy is not a feasible future for any country. Just in the US alone, the amount of legislation that is voted on per two year congress period numbers in the tens of thousands. Voters have neither the time nor effort to research or vote on issues that are not important to them.