I don't think the historical pilots nor the modern pilots are only studying for the exam. Of course there are exceptions as there is different individuals as pilots. But I hope of course people are studying to get knowledge even today.
But the more interesting question is how the flight planning would differ. I guess todays pilots with weather radar would more easily jump in the cockpit and just fly compared to our ancestors who needed a more careful planning before going.
Maybe more cancelled flights than today or more diverted flights due to weather than happens today.
It would be interesting to hear from a pilot who flew commercial without todays technology that makes modern pilot life much easier.