I'm lucky enough to have space for both. They do different jobs - there's overlap, obviously, but I don't bake bread in the airfryer and I don't cook chicken wings in the oven.

>Isn't an air fryer already the poster child of a "can't have a regular oven because I have no space in the kitchen, I'm renting the apartment, or both" appliance?

I suppose it's that for some people but everyone I know with one also has a fullsized oven. They are used for different purposes and often you don't want to heat up your whole oven to warm up some fries for 10 minutes.