What is the point of playing assassins

The point of playing them is to get better at playing them so that you can do their job properly.

They can.

Its just not as mind-numbingly simple as it was before.

A S7 assassin is a champion that requires skill, careful timing and coordinated usage of abilities to bring down a target, with horrible consequences if you make a mistake.

A S6 assassin is a champion for unskilled kids who delude themselves into believing they are good at the game, by killing someone by pressing one button.

Either you learn to adapt or you don't deserve success as an assassin player.