I see tons of it every day. I live at that intersection. Obviously the buses go to Islington, but for a significant number of people, their permanent route is to get off at Auckland.
Yup.
Miway #76 counter-flow rider here.
Morning: Transfer from Subway to Miway at Islington. Why? Better waiting area, better choice of seating on bus, more likely to catch bus on schedule, don't have to watch for / flag the bus, potentially missing it.
Evening: Transfer from Miway to Subway at *Kipling*. Why? Slightly more of a walk, not sure if it actually gets me home any faster (though I've seen people from my bus get on the same train at Islington). However, I *always* get a seat, and better choice of seats. Yes, sometimes Dundas St. is really slow getting to Islington, so it's nice to avoid that. There's a bathroom as Kipling

If I had to make a rough guess, I'd say about 30% of the passengers get off at Kipling/Aukland. I usually only go to Islington if I've slept past my stop or if the weather is particularly bad.