It's one thing to use a medium that is being abused by malicious actors; it's another to be on a medium that suffers constant drama fostered by an owner and CEO who spends his days vocalizing an imprecise understanding of civil rights and his contempt for his customers.
Negativity aside, the article makes fair arguments against setting expectations for rail speed too high. The thing is, trains do not have to be faster than 300kph/185mph to compete with planes.
Modern trains are infinitely more comfortable than modern planes, so they do not need to match planes in travel times. A modern train features silent travel, ample leg room, unpressurized air and no seat belts. Reliability is key and that does require infrastructure investment.
Rail infrastructure will always require subsidies but the costs do not have to be astronomical. Meanwhile, the cost of air traffic emissions are carried by society, which can't go on much longer.
Of course going over the handlebars is possible with a cargo bike. The cyclist will hit the cargo area before they hit the pavement, which makes these situations no less dangerous.