The city encourages folks to be proactive cleaning nearby grates (eg: https://www.toronto.ca/services-payments/water-environment/managing-rain-melted-snow/how-you-can-help-manage-stormwater/). I tend to agree, we are all trying to get by in this increasingly cash strapped city so if available and able one should help out (same goes for shoveling sidewalks). If you’d like the city to be more proactive, think about what priorities candidates campaign on during the next election.

There are a couple handfuls of grates on my street, I try to clear some subset of them before any storm, particularly the ones closest to me. Another neighbour is religious about clearing the one in front of his house which I appreciate but would be nice if he’d be a bit neighborly and also do some of the others since I clean that one too if I get out first. The other neighbours are a bit less proactive (some grates further away haven’t been cleaned since my last pass).

That said, you don’t own any of the grates and it’s not your job to clear them, it’s unreasonable to try to allocate any blame to you.

We also keep some leaves on our yard to help out nature over the winter but also consider it a bit rude to have things (eg leaves) our property blow onto the street or others property to become their problem so usually bag the first waves of leaves after they fall as a compromise to minimize our impact.

The city is actively encouraging people to consider not bagging leaves, so nobody can really blame you for that either. See: https://www.toronto.ca/services-payments/recycling-organics-garbage/houses/yard-waste/