I know that the CTrain reminders to not forget your newspapers when leaving the train have been overwhelmingly successful because I haven't seen a newspaper on the train even one time in the last 10 years.
I mean I can count on one hand how many times I've ridden the c train since 2019, but as a former daily rider I never saw one once the Metro paper folded. >99.9% of the papers on the train I saw, were Metro papers.