I agree. While I would like to see a Supercharger installation in Ottawa, I am not seeing current lack of a Supercharger as a critical problem (except maybe for a 75 or in very cold weather).
Toronto to Ottawa - Range charge in Kingston, take Hwy 15 to Hwy 7 to Ottawa - 170 km of 80 km/hr road, charge in Ottawa (or not), take same route back - total distance 340 km on mostly 80 km/hr road - typical reserve (for an 85) around 60 km of range back in Kingston. If you can charge for an hour in Ottawa at 30 amps (at the NAC, Minto, Best Western or other downtown locations) the range buffer increases to 100 km, which may be required for colder weather. If you have more time on charge in Ottawa, you can reduce the level of charge at Kingston. Perhaps not ideally convenient, but far better than three years ago (when there were no Superchargers and an overnight stay in Ottawa to recharge after the drive to Ottawa on Hwy 7 was the only option).
For Montreal to Ottawa - Range charge in Montreal, drive to Ottawa via 17 and 174 (rather than 417) total round trip distance around 380 km which results in a smallish buffer in an 85 (but a decent buffer in a 90D), charge in Ottawa to the extent possible to increase buffer and worst case (i.e., no charging in Ottawa or cold weather) return via the Cornwall Supercharger (which adds around 15 km and 20 minutes to the trip). Montreal to Ottawa to Cornwall is around 300 km. Again, not perfect, but certainly feasible and vastly better than the Level 2 options which were all that was available before Superchargers.
The challenge is whether it is better to increase the level of service and seamlessness of the experience for the areas which are currently served (e.g., Southern Ontario), or to expand the network into less densely populated areas with a view to bring more potential customers onto the network and expanding the area which is accessible to existing customers. As an admitted "enthusiast" (who has kicked the ICE habit) I favour the latter, but certainly understand why others may favour the former. Hence my advocacy for the extension of the Supercharger network into Atlantic Canada.