Of course there are reasons to update it. It’s going to be harder to fix when it breaks than a modern system, it’s going to be harder to find people to work on

Of course there are reasons to update it. It’s going to be harder to fix when it breaks than a modern system, it’s going to be harder to find people to work on it than a modern system, and those problems will only increase over time to the point where they could cause extended transit outages.