I like it when companies take pride in their product and where they’re from. That’s a good way to sell me something, or at least earn my goodwill toward your company, even if I’m never going to be your target audience. In that sense, I’m predisposed to liking the Cadillac commercials celebrating their Detroit heritage.
But being proud of yourself does not mean you have to hate on other places. I understand saying your not one of the “famous” cities- New York, Chicago, but the line “and we’re certainly no one’s Emerald City”- why the hate on Seattle? Not needed.