> I’d say it’s mostly a North-European thing,

I think it's a "busy tracks" problem in general, which yeah, is a problem in Europe in general. You can't just stop a train in the middle of some track, there are a bunch of other trains coming too, who can't just pass unless you get to a place where that is possible, which isn't everywhere.

None the less, the rest of what you say is true of Sweden, but I don't think it's the reason a train refuses to stop on some train tracks.