Quite true, though I hate the idea of building expressways for seasonal weekend traffic.
I mostly agree.
I go up to Sudbury often enough - the old 69 from Port Severn to Parry Sound was windy, with fewer passing lanes, more local traffic, and then the damned cottagers tying up intercity traffic with the RVs, SUVs and boats on trailers. I still avoid the weekend peak directions like the plague, but it is useful. (This is one of the few trips I do by car - the Greyhound run is brutal and full of weirdos, the train too slow and infrequent, but a treat if I am not in any hurry going north)
North of Parry Sound, it is a different highway - fewer settlements of any size means less local traffic, most of it is through intercity. The MTO just extended many of the passing lanes - they help too. I would look forward to the Nobel by-pass and the twinning of the section from 17 down for the 30 kilometres or so (this is a windy, slow section), otherwise, a few extra passing lanes perhaps is all that's really needed. It's very straight from north of Nobel to about the French River with a few exceptions, unlike the entire highway that is now twinned south of PS.