The problem with this season and comparison to the previous ones is that it is more punishing for bad players.If your team plays poorly(or you play poorly) in a single or couple players early game its a death sentence. In previous season if you died a couple times you could buy a few defensive items and play passive till you could get into the game. This season if the enemy gets a few kills they start snowballing out of control.
Your Opinion is unpopular for a reason. It's because it fails to address the difference between this season and every other season.
As far as the "adapt to the new season" nonsense. Games would need to last long enough to learn anything really. Theres so much that goes wrong with a game so quickly now its hard to break down what you could of done, if you could of done anything to begin with.
I mean its not just scrubs in low elo saying this stuff, it goes all the way to challenger tier.