It is better to those coming to/from the South Shore, in PQ terms 'that's it, that's all'. It is of no benefit to anyone going to/from Downtown Montreal...I mean come on, even in the worst traffic I've never taken more than 35 - 40 mins in either direction and have made it in 18 mins early on a Sunday morning. Even the whole 'YTZ is so much more convenient if you live DT' is a crock...I'm sure that I would be faster front door to gate from my former home at Yonge + Eglinton to YYZ than YTZ any day of the week, at any time of day.

This is like the case for YHM in the GTA. It has a catchment area of x-million people that are closer to it than YYZ. It's a small, easy airport to navigate with low cost parking. It's all that and, as my PQ friends would say, 'and a bag of chips'...and yet, despite massive efforts and investments over 30 years by many parties it's still pretty much nothing, not putting a 5% dent into YYZ traffic.

Not to mention the published schedule shared in the OP suggests it might be ok for the FOTSG crowd but not at all for the business traveler.

I sincerely hope better luck for YHU, but I expect it will see a similar fate.