I'm around the Toronto area fwiw. I'd say on a typical day I see about 1 out of every 75 male riders riding a mixte. Usually an older gent, though I've seen maybe 1 or 2 younger men riding a mixte over the past 2 months.
I don't see a ton of mixtes, but they don't linger in shops. When I see one, men are pedaling about 1/3 times!
Of course I don't know who is riding the ones I see parked.
. Probably a third have drop bars. Maybe a few more.
I don't see many with front baskets.