This is not true. Having located from Calgary - Google is very much so updating their 3D models on a regular basis. Especially after a major project is completed. I don't doubt that montreal is in that same league where it gets updated on a yearly basis.
ttps://www.google.com/maps/place/Calgary,+AB/@51.0412122,-114.0615108,448a,35y,346.27h,62.31t/data=!3m1!1e3!4m5!3m4!1s0x537170039f843fd5:0x266d3bb1b652b63a!8m2!3d51.0486151!4d-114.0708459