Solarpunk technology

Their entire goal is to commercialize it. Its not about efficiently moving large numbers of people. That makes too much sense for this endeavor since you need a set/rigid schedule and predictable travel patterns.

These abominations, are for the convenience of the individual, in the most poorly thought out way. Rather than waiting for the 3PM, they want to advetise you can show up at 2:51 and get on the next available pod and embark, and charge a premium for no waiting and probably try to jazz up the idea that you don't have to worry about other riders ruining your trip or being a distraction.

It entirely ignores the basic engineering problem of more moving parts means more chances of failure per trip and a single pod going down at best causes the entire line to shut down and at worst a catastrophic pile up as following pods fail to slow or stop and ram into the broken down pod.

Regular trains have conductors who can contact the control station or manually slow the train if an obstruction is on the track and some trains even have engineers on the train or on call who can report to a troubled train in short order to deal with the issue. These smaller pods probably arent all going to have gps or location trackers in them to cut costs so even if the pod can accurately report problems there is no garuntee the engineers will be able to quickly and easily find or know its general location to render assistance as needed.

Id also wager enough of these pods to carry enough passengers to equal a common commuter trainer would have a lot higher maintenance requirements compared to that commuter train, so despite charging higher ticket prices the company probably won't be making any more profit than if they just managed regular trains. I'd be willing to be anyone that concerned about privacy for commuting and willing to pay higher would just find that buying or renting a car or bike was just as cost effective and less restrictive than these pods.

TL;DR this entire exercise is a solution looking for a problem and is generally worse in every way that matters.