No - but if we could aim to make commuting by PT a similarly relaxing and comfortable experience then slowness mightn't be seen as such a bad thing.

The point of a commuter train is to get to work. On time. Reliably. People freak the fuck out when they're going to be 5-10 minutes late due to any kind of service issue, because even if they know it wasn't their fault, their boss will assume it was (and most people who take public transit have bosses). You can outfit the trains with fine linens and couches instead of seats but being late to work in the morning will never be "relaxing" or "comfortable."

PT being regularly late is definitely a reason people avoid it, hence my suggesting we focus on service reliability and comfort. I'm not proposing we make PT slower than it already is - just that the focus needn't be on mean travel time. So the average PT consumer may need to leave their house a little earlier but would virtually always get where they're going on time (stress-free and in comfort), vs the current situation where you might fairly often be considerably late.

You're cutting into people's family time with this.

Perhaps but it's hard to see how a little more enforced meditative "alone" time would make anyone a worse parent.

(Further, where did I say I was suggesting PT should be slower than it is now?)