The state of the game

I started playing this game more at the end of season 5 ,the same time people started to say the game started to go downhill. From what I remember,back in season 2 or 3 when i was putting in 40 games the whole year,the game seemed to punish more players that play bad and give really good players good means to almost solo carry the game. Nowadays it feels like the game is way harder to win alone ,you need to rely more on team mates.The support now has so many shields and heals that it makes playing assasin feel awful. It feels close to impossible to try to kill a support adc pair that are decent at the game.Like lets say I play zed and the enemies are a vayne janna.At min 20 the janna will probably have redemption and ardent,exhaust,shield,tornado,ult. Like my best shot to kill the adc is to do a w q e and ignite combo from the fog of war.If the 2 see me they dont even need to back off unless other enemies join,cause no matter how i play it its hard to get a kill.Maybe a really good zed player would be able to do something but i doubt an average zed player would. Not long ago adc even bought targon to get another extra shield. My point is that so many shields and heals feel so bad.It makes doing a play as a midlaner or jg way harder than it used to be. This is just my opinion.I'll look forward to listen to yours.