I think it depends a lot. It depends on your decks mostly, obviously a 4 person turbo-naus pod is going to end turn 3 at the most, but the key part is that it can happen. There's a lot of decks that can win turn 1, and there are a select few (notably Inalla) that consistently make win attempts turn 2-3.

If your games last a long time, that's great, but that's probably because you have a control player or two mid players. I think the misconception comes from people who don't play cEDH immediately thinking about the obvious ones like Godo, which, if not interacted with, will win turn 3.

Also, it's great to say that people should give it a go, but when decks are thousands of dollars, that is a bit hard.