It's not a question of right or wrong. The game has become the WWE. More sports-entertainment and less an athletic contest. Good for TV ratings, bad for the legacy of the sport.
Are you seriously making the argument that these record numbers would be put up in a league where EVERYTHING was not pass interference? That flies in the face of reason. If a DB makes eye-contact with a receiver they throw a flag. Most of what passes for defensive technique in the NFL is simply allowing the catch and making the tackle. Unless a DB has perfect position he's coached to just wait because contesting the ball typically draws a flag. When it doesn't, here comes Tom to cry to the ref, who won't make that mistake again.
Add to that the way recievers are coached to flop, to stop in front of DBs and cause contact to draw fouls when the ball is off target. You are grossly underestimating the influence of the super-enforced passing rules of today.
And I haven't even discussed the Worst Rule In Football. As a defensive player today you're not even playing against the offense. You're playing against the Refs and the Competition Committee. Take the handcuffs off the defense and these "specialized passers" would become ordinary in a hurry.
The issue isn't how the old schoolers would play today. This issue is what today's QBs would look like if the rules were still fair. Again, you are underestimating how much different the game is when the Refs are controlling the action. These rules were specifically designed to add yards and touchdowns to the NFL.
What 8 wins? All you gotta do to make the playoffs is win your division. You don't have to win every game, or even every division game, just the division and you are an automatic qualifier. And that division is garbage. Look at the Fins, Bills and Jets over the last 20 years or so. Maybe good for a year or two in a row, then back to the basement. Yes, NE is consistent, but what would they look like in a division with perennial contenders in it like Pittsburgh or Baltimore?
And for the record, IND has also benefited from playing in a crap division.