Certainly one wants to compare 'rates' of death, as opposed to absolute totals.
A quick glance at Toronto traffic fatalities through 2020:
View attachment 447984
So 5 drivers, I believe (but am not certain) that 'other' is passengers. So 15 deaths for those riding in cars.
So far as I can discern, excepting people having heart attacks and the like, the typical TTC number is closer to 1 or 0, with the TTC having a modal share close to 40% in the City in the period in question.
But I could stand to be corrected on that.
I have to confess, as a car owner and driver, I still take TTC 3-4 times per week and have difficult grasping that level of fear (no insult intended).
Knock wood and all that, but not only can I can I say I haven't been attacked on the TTC in 37+ years ( I was hit once as a child); I can also say I have yet to witness a violent attack ( and may it remain so)
I do appreciate that these incidents are tragic and horrible; and their randomness in some cases can be very unsettling and that's entirely understandable. Yet, the overall liklihood of serious violence affecting someone taking transit in Toronto remains, for now, quite low.
That said, action should be taken to address mental illness, homelessness and problem riders in the near term, both as a gesture of kindness for those that need help and as a reassurance to those with fears.