This kind of CTB will *not* be met with support here because literally no thought nor research is put into it. It is also incredibly selfish, and leaves a huge mess in the aftermath. For as long as I am here, I will continue to speak against bus, train or tram CTB or any similar method that involves dragging a large group of innocent people into a mess they didn't sign up for. I cannot, in good faith, support a method that involves traumatizing the driver.
All you wrote makes perfect sense. You're right if we are to look at the situation without context.
To take it a little bit wider, nobody is innocent in anybody's pain, because of what they didn't do. They didn't see, they didn't care, they didn't listen. They simply went on with their lives. Sounds innocent, the indifference though is there and it is guilty. Did they *do* something targeted to inflict you pain? No (well, as a rule). But what somebody doesn't do is as much of an action as doing. It is the countless, faceless, nameless people/crouds that dictate the momentum of society. What kind of pain we have to tolerate and "live" with is something that the faceless decide.
We may find it hard to pinpoint why we don't care about others or why we hate people without even having a clue how this or that person is, but we know deep down that our species failed us, they attacked us by turning their backs.
If, let's say, I kill myself in ways that provoke discomfort to others, from nuisance to trauma, and I don't feel remorse in advance, I'm not kind, sure, but not worse either, just as much of an asshole as everybody else who doesn't fight for others' relief (going on with my business what). And those who do fight for the others' relief from pain, they sure will understand, they will not be traumatized, but only maybe grieving over a loss or, if you like, another proof of things having gone wrong with humans.