why does riot want to kill this game?

I started at season 3 it was satisfying playing the game, i had so much fun. But now what i experience is this game is just dieing. Adc role doesnt exist anymore, taliyah played in jungle, mages taken over the supports role what happened to this game? I love playing as adc but facing brand and all the other mages is just frustrating. What is more now that the adc changes are up.. adc is dead bruisers taken over adc and even midlane. They are making more bruiser items to make them stronger but what about the adc role? Is this going to stay like that in season 8 or will they fix it?