Firstly, it is an entirely mechanical car, which makes everything much simpler. But the truly stunning bit is the documentation and community.
All of the workshop manuals are available online. That is good enough for most tasks, but if something particularly complex needs diagnosing, there are forums with all the information you need.
When you need to get parts, an exploded diagram of the entire car is available online with part numbers. Both the original manufacturer and several third parties still make parts. Somebody has even made a price comparison website.[0]
I wish all the things I owned worked like this. I understand the economics often don’t work out for smaller, cheaper things, and there is no incentive for the original manufacturer to provide these things, but surely there is enough of a community to support common repairs in a similar way.