Maybe this observation is a product of sample bias, but it looks to me like analytics based defenses heavily emphasize preventing the big play against evenly matched opponents. The result is giving up short-underneath passing game and playing very soft coverage until the red zone.
So, offenses take the short passing gains, allowing tiresome, long, clock-eating drives on one dink 'n' dunk play after another. This reduces the number of possession in a game, further reducing scoring.
It's like the defenses don't even start trying to stop offenses until the red zone is reached.
I'm sure the analytics say this is the way to go. But from a purely aesthetic point of view, I hate this. It is dull, dull football. I prefer "poop or get off the pot" football. Let's see some risk taking and big plays on either side of the ball.