Are you saying the game isn’t won and lost in the trenches?The salary cap and how it impacted the construction of teams in 1994 was pretty monumental.
4 NFL franchises have been added in the past 30 years increasing the league from 28 teams to 32. That is pretty monumental.
Total yards per game have increased. Passing yards. Passing attempts. Plays per game. All have increased. Defensive rules have changed to favor the offense.
I didn't make the statement, but I feel it is fair to say the NFL game as a whole has changed pretty significantly over the past 30 years. Especially in relation to QBs and offense.