The biggest evolution in F1 is actually the cars whom get better and better for every year. The drivers today complain about tire degradation, high fuel loads,
poor visability in every damp/wet race, poor balance etc etc.
The cars of today are generating higher G-forces but in many curves the driver rests his head against the cockpit side walls. On a 80:ies or early 90:ies car the driver couldn´t
do that. The races back then also usually lastest for a longer time.
I rewatched a few races from the 80:ies a couple of weeks ago, I was amazed by how much more input the driver had over the race outcome than today.
The whole reliability issue was much more up to the driver, taking care of your tires and fuel which could earn you the race win. In every gearchange you had to
take away one hand of the steering wheel and heel-toe in every downshift, just imagine driving around in Monaco with no powersteering for 2 hours and one hand constant
changing gears and the other one steering the car...
If you missed that a few times you could overrev the engine or break the gearbox.
The race strategy was more or less up to yourself. Pitstops was more like a lottery, lapping cars was sometimes as hard as a real overtaking manouvre etc etc.
Yes, driver input is very different. But today's cars are perhaps not easier to drive. They just require different skills.