No one sober would ever consider Springfield MO or Springfield IL to be anywhere near the word MAJOR city. Both are destitute compared to the actual cities in their states
I'd never heard of this particular Springfield so I looked it up. According to Wikipedia St. Louis is the 22nd largest city by population in the US and Kansas City is 34th. Neither are huge but I think major city applies. Springfield on the other hand ranks 143rd. I'm not even sure most people would consider it a city.
Woah woah woah. Springfield is definitely a city. It says so right in the logo:
(Real talk, folks. I don't care if anyone considers Springfield a "major city" or even a "city" at all. It's just funny to think of an anthropomorphic caricature of Springfield, Missouri crying over a perceived slight to its ego.)