Yes, people do all sorts of nasty and cruel things because they think it's kinda amusing. That doesn't justify the behavior.
The act of riding a bicycle in and of itself is not "preachy". That happens. "six bicyclists training for a road race were run over by a 16-year-old who was rolling coal", at https://en.wikipedia.org/wiki/Rolling_coal .
Rolling coal nearly always implies deliberate intent, not coincidental timing. Some examples from state laws listed at that same Wikipedia page: "knowing release of soot, smoke, or other particulate emissions", "with the intent", "may not knowingly or intentionally cause", "intentionally release significant quantities of soot, smoke, or other particulate emissions"
The act of riding a bicycle in and of itself is not "preachy". That happens. "six bicyclists training for a road race were run over by a 16-year-old who was rolling coal", at https://en.wikipedia.org/wiki/Rolling_coal .
Rolling coal nearly always implies deliberate intent, not coincidental timing. Some examples from state laws listed at that same Wikipedia page: "knowing release of soot, smoke, or other particulate emissions", "with the intent", "may not knowingly or intentionally cause", "intentionally release significant quantities of soot, smoke, or other particulate emissions"