Earlier quoted context omitted.
That is only true in the simplest scenario of taking a train on a flexible ticket and without any transfers. As soon as you have transfers in the mix (as you often would if travelling longer distances) or stricter tickets, not making it to the train is usually a really bad option.
It’s also true of transfers (changes) on routine journeys in most of the world I would have thought. Because almost all services are regular. It is the arrival time at your destination you build time into, then you work backwards, right? IMO booking strict tickets (e.g. booking a seat) makes sense on only a small handful of routes in the UK, for example, and may even result in you being offered fewer possible options…
This is a great point. I also find train travel the least stressful over all other means of travel.