I think it’s worth noting that the bright blue seats at the Etihad contribute massively to the Emptihad reputation. In a cold weather climate where everyone is going to need to wear a (usually) dark colored winter coat the match, EVERY empty seat sticks out like a sore thumb. Most grounds have considerably darker seats that blend into the crowd if they’re unoccupied. Or Brentford who specifically designed their stadium with multi-colored seats to combat this problem.
Also, with drinking in view of the pitch prohibited in England, the empty seats may not be going unused for the entire match, but simply belong to someone who dipped out early to the concourse for their halftime drink, or is late to return.
Here’s my picture from when I was there last year. There aren’t THAT many empty seats, but the ones that are really stand out.
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