I think you just need to have driven a car from that era to understand this post and believe it -- the car doesn't neccessarily need to be that old. I had a '77 Civic in 1982 and it had many of these same "features" as his Porsche - any key (or screwdriver) could open the door or turn the ignition, it had a manual choke lever installed because the automatic choke didn't work, there was an art to pumping the gas pedal before starting in cold weather (there was a fine line between being able to start and flooding it), there was no clutch interlock (or it was broken) to prevent starting the car in gear, and a bunch of other quirks similar to his.
And it was only 5 years old.
edit: And the oil use! I'd forgotten about that until reading his post, I used to carry a few jugs of oil in the trunk since the car was using almost a quart per fillup, and many gas stations kept a display case of oil out by the pumps so you could easily buy a quart if you needed it. My current 7 year old car doesn't use any noticeable amount of oil between ~8000 mile oil changes.