A bit contrived, but the blood pressure effects can be pretty bad for me. I’ve unexpectedly fainted after smoking before and banged myself up a bit. I suppose it’s possible to faint and hit your head on something you wouldn’t want to.
Choking makes you as equally dead as any other cause. Dead is dead, no difference to the victim. It’s naïve to think cannabis is harmless, it can absolutely be lethal as a consequence of behavior or messing up any of the million different variables that your body needs regulated to keep you going long term.
How any mind altering substance can. People take it because it is psychoactive.
The ways it can end your life are innumerable.
("But what about alcohol!" Yes and? Because one thing is bad another thing can not possibly be bad?)
Also there is at least some link between it and schizophrenia. Anecdotally the weed smokers I know are, let's say, not the wisest and most moderate people I know. (Correlation and causation, I know.)