Is Golf III always rusty?

Hello guys, my father asked me to take me to his car. He drives a 3 gG TDI (with 90 hp) and the thing was built somewhere in the mid 90s (96?). The part is really rusting at all corners and edges!!! I renewed the trunk flap. The door at the back right is almost through and left driver door blooms so in front of him. The rust on the rear lights is almost normal, however, when I see the other gulf like this, right? Don’t get me wrong – I wi ll not blaspheme – I was only extremely surprised that such a car seems to be so badly processed. Does cars, which are twice as old, stand outside every day, are driven in any weather … and not have the track of rust. Appropos … was the Golf III not galvanized at all or something??? Greetings, Jörn