I get what you're saying, but I think if you actually looked at the "old" days, players weren't playing as much as we think they were. Plus, with pinch hitting and smaller pitching staffs, players could play in a game pinch hitting or pinch running while still getting a day "off".
Zimmer burned out the 78 Red Sox by playing his regulars virtually every day, but only Rice started all 163 games.
Fisk started a sick 151 times (and appeared in 157).
Burleson 144
Evans 141
Hobson 147
Lynn 148
Remy 141
I used starts because there is no doubt as to intent by the manager. I'm not going back to see when guys were hurt (I know Burleson was in July because I watched it happen in Cleveland)