I'm using different examples from different eras. Like I said, this current "max effort with every single pitch" dogma has only been around for 15-20 years. In the dead ball era, the differences from the modern game were the most extreme, but guys didn't go max effort 100% of the time in the 70s and 80s either.
The way the game is approached offensively, and thus the expectations of a pitcher, are different. As recently as the 90s, there weren't dudes throwing 95 MPH wipeout sliders with 40% of their pitches. That has taken hold really only in the last decade or so. That puts tremendous stress on your arm and you aren't throwing complete games if you do that, especially if you aren't pitching to contact either (which hardly anybody does anymore).
Are you one of these "guys don't throw complete games anymore because they are pussies" guys?