Design is really subjective and IMHO it's fruitless to try to convince people their opinions on it are wrong. Some like the Y, some don't. It's cool to state your own opinions on designs, but why criticize others for having a different opinion on something so subjective?
For me, my next vehicle purchase needs to be practical and utilitarian with a relatively large cargo area, something that can replace my Subaru Outback. 35ish cu ft of storage behind the second row with the seats up, little rake to the fifth door to fit boxy items inside, enough clearance to handle snow storms, AWD, 300ish miles of range, seating for 5, tow at least 2,500 lbs, below $60K before incentives or gas savings.
My early hope for the Y when I learned it would be based on the 3 was that they'd turn the 3 into a wagon, lift it a few inches, increase the diameter and width of the tires, and give it a tow rating. The heavily raked hatch design is a disappointment but I'll reserve judgement until I see the cargo area in person. I'm a happy 3 owner and hope another Tesla will replace our last gas vehicle, but ultimately it must match or exceed our everyday needs.