Canada Goose are actually terrible jackets. They are heavy, not waterproof, and not very versatile as far as temperature go. A proshell (all come with lifetime warrenties now), and a downfill midlayer is the only thing you'd actually want use as winter gear. That being said no one actually buys CG jackets as outdoor gear so I guess it's just a fashion thing, but I find that silly since they are actually quite ugly in my opinion.
Most of them are actually very low fill power coats, and despite being quite heavy they are very cold.
Oh boy. Here we go....
I would rather wear one coat versus a proshell + down jacket any day of the week.
The only Canada Goose coats that I would deem as 'heavy' are the Expedition and all other equally heavy relaxed fit CG coats. Those are meant to be warm in extreme cold conditions. While my Ontario is very warm and my Chateau is great for the Boston winter, I would not label those coats as 'heavy' in the sense you are describing them as, which is to say uncomfortable.
While I would certainly welcome CG to make their coats waterproof, I don't really see this as a huge deal. I would never wear any of my CG coats in temps that could possibly bring about rain. I also am not one to spend extended hours of time outside in the winter as it snowed heavily upon my coat.
No one buys CG as outdoor gear? If you mean for something like skiing, then yes, there are superior alternatives. But my Ontario would be perfectly suited for a very cold winter (IMO very cold) like Montreal or Toronto.
Ugly? Well that's a matter of taste but I'd argue that the Chateau is an especially nice looking coat.
Low fill power? 625 is plenty warm for 98% of consumers.
If you don't like CG that's cool but you are either trolling or just sharing some ridiculous statements.